Migraine headaches
Highlights
New Migraine Drug Approved
In April 2008, the FDA approved a new prescription drug (Treximet) for treatment of migraine headache attacks. Treximet is a pill that contains a combination of the triptan drug sumatriptan (Imitrex) and the anti-inflammatory pain reliever naproxen (Aleve, Naprosyn). Some studies have indicated that a combination of sumatriptan and naproxen works better for migraine pain relief than either drug alone.
Migraine Triggers
Migraines can be triggered by many everyday things. Different people respond to different triggers, so it is important to track your migraine patterns to help avoid migraine attacks. Common migraine triggers include:
- Emotional stress
- Intense physical exertion
- Abrupt weather changes
- Bright or flickering lights
- High altitude
- Travel motion
- Lack of sleep
- Skipping meals
- Odors
- Certain types of foods and beverages (aged cheese, chocolate, red wine, beer, coffee, and many others)
- Food additives or preservatives (nitrates, nitrates, monosodium glutamate)
Migraine Treatment Approaches
Migraines need a two-pronged approach: Treatment and prevention. Treatment uses medications that provide quick pain relief when attacks occur. These drugs include pain relievers such as nonsteroidal anti-inflammatory drugs (NSAIDs), triptans such as sumatriptan (Imitrex), and ergotamine drugs.
Preventive strategies begin with non-drug approaches (behavioral therapies, lifestyle changes). If headache attacks continue to occur on a weekly basis, your doctor may recommend you try preventive medication. Drugs currently approved for migraine prevention include the beta-blocker drugs propanolol (Inderal) and timolol (Blacadrene), and the anti-seizure drugs divalproex (Depakote) and topiramate (Topamax).
Introduction
The pain from a headache does not start from inside the brain. (The brain itself can not feel pain.) Instead, headache pain begins in one or more of the following locations:
- The tissues covering the brain
- The structures at the base of the brain
- Muscles and blood vessels around the scalp, face, and neck
Headache is generally categorized as primary or secondary.
Primary Headache. A headache is considered primary when a disease or other medical condition does not cause it.
- Tension headache is the most common primary headache and accounts for 90% of all headaches. [For more information, see In-Depth Report # 11: Tension headaches.]
- Neurovascular headaches are the second most common primary headaches. This type includes migraines and cluster headaches. [Fore more information, see In-Depth Report # 99: Cluster headaches.] Such headaches are caused by an interaction between blood vessel and nerve abnormalities.
Click the icon to see a depiction of migraine cause.
Secondary Headache. Secondary headaches are caused by other medical conditions, such as sinusitis, neck injuries or abnormalities, and stroke. About 2% of headaches are secondary headaches caused by abnormalities or infections in the nasal or sinus passages.
It is not uncommon for someone to experience a combination of headache types.
Click the icon to see a comparison of headache symptoms.
Migraine Headaches
Migraine is the most common form of disabling headache that prompts patients to seek care from doctors. Migraines are sometimes classified as occurring with aura (previously called classic migraine) or without aura (previously called common migraine).
In general, there are four phases to a migraine (although they may not all occur in every patient): The prodrome phase, auras, the attack, and the postdrome phase.
Prodrome. The prodrome phase is a group of vague symptoms that may precede a migraine attack by several hours, or even a day or two. Prodrome symptoms include:
- Sensitivity to light or sound
- Changes in appetite, including decreased appetite or food cravings
- Thirst
- Fatigue and drowsiness
- Mood changes including depression, irritability, or restlessness
Auras. Auras are sensory disturbances that occur before the migraine attack in 1 in 5 patients. Visually, auras are referred to as being positive or negative:
- Positive auras include bright or shimmering light or shapes at the edge of their field of vision called scintillating scotoma. They can enlarge and fill the line of vision. Other positive aura experiences are zigzag lines or stars.
- Negative auras are dark holes, blind spots, or tunnel vision (inability to see to the side).
- Patients may have mixed positive and negative auras. This is a visual experience that is sometimes described as a fortress with sharp angles around a dark center.
Other neurologic symptoms may occur at the same time as the aura, although they are less common. They include:
- Speech disturbances
- Tingling, numbness, or weakness in an arm or leg
- Perceptual disturbances such as space or size distortions
- Confusion
Migraine Attack. If untreated, attacks usually last from 4 - 72 hours. A typical migraine attack produces the following symptoms:
- Throbbing pain on one side of the head. The word migraine, in fact, is derived from the Greek word hemikrania, meaning "half of the head" because the pain of migraine often occurs on one side. Pain also sometimes spreads to affect the entire head.
- Pain worsened by physical activity
- Nausea, sometimes with vomiting
- Visual symptoms
- Facial tingling or numbness
- Extreme sensitivity to light and noise
- Looking pale and feeling cold
Less common symptoms include tearing and redness in one eye, swelling of the eyelid, and nasal congestion, including runny nose. (Such symptoms are more common in certain other headaches, notably cluster headaches.)
Postdrome. After a migraine attack, there is usually a postdrome phase, in which patients may feel exhausted and mentally foggy for a while.
Chronic Migraines
In some cases, patients eventually experience on-going and chronic headaches. Some doctors believe that, unless otherwise demonstrated, any chronic headache consisting of episodes of disabling pain that recur regularly over years should be considered as a migraine.
Chronic migraines may occur from overuse of migraine medications (called a rebound headache) or may develop over time (called transformed migraine).
Rebound Headache. The most common cause of chronic migraine is the rebound effect, which is a cycle caused by overuse of migraine medications. The process involves the following:
- Patients typically have taken pain medication for more than 3 days a week on an ongoing basis.
- When the patients stop taking medication, they experience a rebound headache.
- They start taking the drugs again.
- Eventually the headache simply persists, and medications are no longer effective.
Medications implicated in rebound migraines include nonprescription painkillers (acetaminophen, aspirin, ibuprofen), barbiturates, sedatives, narcotics, and migraine medications, particularly those that also contain caffeine. (Heavy caffeine use can also cause this condition.)
Transformed Migraines. In some cases, migraines themselves evolve into chronic, daily headaches called transformed migraines. Such headaches resemble tension headaches but are more likely to be accompanied by gastrointestinal distress and mental or visual disturbances and, in women, to be affected by menstrual cycles. In one study, the risk for transformed migraines were associated with other factors, including allergies, asthma, hypothyroidism, hypertension, and a daily intake of caffeine.
Other Migraine Variations
Although migraine is considered to be a specific chronic illness, it has various presentations that occur in different individuals.
Menstrual Migraines. Migraines are often tied to a womans menstrual cycle, typically in the first days preceding or beginning menstruation. Researchers think that estrogen plays a role. About half of women with migraines report an association with menstruation. Compared to migraines that occur at other times of the month, menstrual migraines tend to be more severe, last longer, and not have auras. Triptan drugs can provide relief and may also help prevent these types of migraines.
Ophthalmoplegic Migraine. This very rare headache tends to occur in younger adults. The pain centers around one eye and is usually less intense than in a standard migraine. It may be accompanied by vomiting, double vision, a droopy eyelid, and paralysis of eye muscles. Attacks can last from hours to months. A computed tomography (CT) or magnetic resonance imaging (MRI) scan may be needed to rule out an aneurysm (a rupture blood vessel) in the brain.
Retinal Migraine. Symptoms of retinal migraine are short-term blind spots or total blindness in one eye that lasts less than an hour. A headache may precede or occur with the eye symptoms. Sometimes retinal migraines develop without headache. Other eye and neurologic disorders must be ruled out.
Basilar Migraine. Considered a subtype of migraine with aura, this migraine starts in the basilar artery, which forms at the base of the skull. It occurs mainly in young people. Symptoms may include vertigo (the room spins), ringing in the ears, slurred speech, unsteadiness, possibly loss of consciousness, and severe headaches.
Familial Hemiplegic Migraine. This is a very rare inherited genetic migraine disease. It can cause temporary paralysis on one side of the body, vision problems, and vertigo. These symptoms occur about 10 - 90 minutes before the headache.
Status Migrainosus. This is a serious and rare migraine. It is so severe and lasts so long that it requires hospitalization.
Prognosis
For many people, migraines eventually go into remission and sometimes disappear completely, particularly as they age. Estrogen decline after menopause may be responsible for remission in some older women.
Complications
Risk for Stroke and Heart Disease. Migraine or severe headache is a risk factor for stroke in both men and women, especially before age 50. About 19% of all strokes occur in people with a history of migraine. Research indicates that migraine may also increase the risk for other types of heart problems.
Migraine with aura appears to carry a higher risk for stroke than migraine without aura, especially for women. Some studies suggest that people who have migraine with aura are more likely than people without migraine to have cardiovascular risk factors (high cholesterol, high blood pressure) that increase the risk for stroke.
Researchers are also studying the relationship between patent foramen ovale (PFO) and migraine. A PFO is a hole in the wall dividing the upper left and right heart chambers. About half of patients with PFO have severe migraines with aura. Researchers are investigating whether surgical repair of the PFO may help control migraines in patients with this heart condition.
Emotional Disorders and Quality of Life. Migraines have a significant negative impact on quality of life, family relations, and work productivity. Studies indicate that people with migraines have poorer social interactions and emotional health than patients with many chronic medical illnesses, including asthma, diabetes, and arthritis. Anxiety (particularly panic disorders) and major depression are also strongly associated with migraines.
A National Headache Foundation-sponsored survey of migraine sufferers reported that:
- 90% of people with migraines could not function normally on the day of a migraine attack
- 80% experienced abnormal sensitivity to light and noise
- 75% experienced nausea and vomiting
- 30% required bed rest
- 25% missed at least 1 day of work due to migraine in past 3 months
Causes
Until recently, the general theory on the migraine process rested solely on the idea that abnormalities of blood vessel (vascular) systems in the head were responsible for migraines. Now, however, doctors tend to believe that migraine starts with an underlying central nervous system disorder. When triggered by various stimuli, this disorder sets off a chain of neurologic and biochemical events, some of which subsequently affect the brain's vascular system. No experimental model fully explains the migraine process.
There is certainly a strong genetic component in migraine with or without auras. Researchers have located a single genetic mutation responsible for the very rare familial hemiplegic migraine, but several genes are likely to be involved in the great majority of migraine cases.
Numerous chemicals, structures, nerve pathways, and other players involved in the process are under investigation. These include:
- Peptides. Stress or some unknown factor triggers the release of certain protein fragments called peptides (Substance P, calcitonin gene-related peptide, and others). These peptides dilate blood vessels and produce an inflammatory response that triggers over-excitation of the nerve cells in the trigeminal pathway. [This nerve pathway runs from the brain stem to the head and face. These nerves spread to the meninges (the membrane covering of the brain).]
- Abnormal Calcium Channels. Some migraines may be due to abnormalities in the channels within cells that transport the electrical ions calcium, magnesium, sodium, and potassium. Calcium channels appear to play a particularly critical role in migraine.
- Serotonin and Other Neurotransmitter Levels. Neurotransmitters are chemical messengers in the brain. Serotonin is a neurotransmitter (chemical messenger in the brain) that is important for sleep, well-being, and other factors that affect quality of life. Abnormalities in serotonin levels have been observed in both tension-type and migraine headache sufferers. Altered levels of other neurotransmitters, importantly dopamine and stress hormones, also occur with migraine and tension-type headaches, and could trigger the events in the brain leading to migraine.
- Reduced Magnesium Levels. Magnesium deficiencies have been observed in people with both tension-type and migraine headaches. Reduced levels could be a destabilizing factor, causing the nerves in the brain to misfire, possibly even accounting for the auras that many sufferers experience.
- Nitric Oxide. Other research suggests that over-excitable neurons release nitric oxide, a small molecular messenger that may be important in triggering in most primary headaches (tension-type, cluster, and migraines).
- Estrogen Fluctuations in Women. Tension-type headaches and migraine headaches are slightly more common in females during adolescence and adulthood. Most likely hormone fluctuations, rather than whether levels are elevated or low, trigger headaches.
- Inflammation in the Maxillary Nerve. Early studies suggest that some chronic tension-type and migraine headaches may be caused by inflammation in the nerve that runs behind the cheekbone (the maxillary nerve) -- not around the covering of the brain. In fact, some work using ice water for reducing swelling in areas of the gums above the last upper molars has relieved some severe migraine and tension-type headaches.
Migraine Triggers
A wide range of events and conditions can alter conditions in the brain that bring on nerve excitation and trigger migraines. They include, but are not limited to:
- Emotional stress
- Intense physical exertion (exercise, lifting, and even bowel movements or sexual activity)
- Abrupt weather changes
- Bright or flickering lights
- Odors
- High altitude
- Travel motion
- Lack of sleep
- Skipping meals
- Certain types of foods, and chemicals contained in them. More than 100 foods and beverages may potentially trigger migraine headache. Caffeine is one such trigger. Caffeine withdrawal can also trigger migraines in people who are accustomed to caffeine. Red wine and beer are also common triggers. Preservatives and additives (such as nitrates, nitrites, and MSG) can also trigger attacks. Doctors recommend that patients keep a headache diary to track which foods trigger migraine.
Risk Factors
About 29.5 million Americans suffer from migraine headaches. They affect about 18% of all women and 6% of men.
Gender
About 75% of all migraine sufferers are women. Migraine is more prevalent among women throughout the world and in every culture. Although the incidence of migraine is similar for boys and girls during childhood, it increases in girls after puberty. Migraine most commonly affects women between the ages of 20 - 45.
Fluctuations of female hormones, such as estrogen and progesterone, appear to increase the risk for migraines and their severity in some women. About half of women with migraines report headaches associated with their menstrual cycle. For some women, migraines also tend to be worse during the first trimester of pregnancy, but improve during the last trimester.
Age
Migraine headaches typically affect people between the ages of 15 - 55. However, migraine also affects about 5 - 10% of all children. Unlike migraine in adults, migraines in children are equally prevalent in boys and girls. Studies indicate that many children with migraine eventually stop having attacks when they reach adulthood or transition to less severe tension-type headaches. Children with a family history of migraine may be more likely to continue having migraines.
Family History
Migraines tend to run in families. About 70 - 80% of patients with migraine have a family history of the condition.
Medical Conditions Associated with Migraines
Many people with migraine have or have a history of depression, anxiety, stroke, epilepsy, irritable bowel syndrome, or high blood pressure. These conditions do not necessarily increase the risk for migraine, but are associated with it.
Diagnosis
Anyone, including children, with recurring or persistent headaches should consult a doctor. There are no blood tests or imaging techniques that can be used to diagnose migraine headaches. A diagnosis will be made on the basis of history and physical exam, and, if necessary, tests may be necessary to rule out other diseases or conditions that may be causing the headaches. It is important to choose a doctor who is sensitive to the needs of headache sufferers and aware of the latest advances in treatment.
Diagnostic Criteria for Migraine
A diagnosis of migraine is usually made on the basis of repeated attacks (at least 5) that meet the following criteria:
- Headache attacks that last 4 - 72 hours
- Headache has at least two of the following characteristics: Location on one side of the head; throbbing pain; moderate or severe pain intensity; pain worsened by normal physical activity (walking, climbing stairs)
- During the headache, the patient experiences one or both of the following characteristics: Nausea or vomiting; extreme sensitivity to light or sound
- The headache cannot be attributed to another disorder
Headache Diary
The patient should try to recall what seems to bring on the headache and anything that relieves it. Keeping a headache diary is a useful way to identify triggers that bring on headaches, as well as to track the duration and frequency of headache attacks. Some tips include:
- Note all conditions, including any foods eaten, preceding an attack. Often two or more triggers interact to produce a headache. For example, a combination of weather changes and fatigue can make headaches more likely than the presence of just one of these events.
- Keep a migraine record for at least three menstrual cycles. For women, this can help to confirm or refute a diagnosis of menstrual migraine.
- Track medications. This is important for identifying possible rebound headache or transformed migraine.
- Attempt to define the intensity of the headache using a number system, such as:
1 = Mild, barely noticeable
2 = Noticeable, but does not interfere with work/activities
3 = Distracts from work/activities
4 = Makes work/activities very difficult
5 = Incapacitating
Medical and Personal History
The patient should report any other conditions that might be associated with headache, including but not limited to:
- Any chronic or recent illness and their treatments
- Any injuries, particularly head or back injuries
- Any uncharacteristic dietary changes
- Any current medications or recent withdrawals from any drugs, including over-the-counter or natural remedies
- Any history of caffeine, alcohol, or drug abuse
- Any serious stress, depression, and anxiety
The doctor will also need a general medical and family history of headaches or diseases, such as epilepsy, that may increase their risk. Migraine tends to run in families.
Physical Examination
In order to diagnose a chronic headache, the doctor will examine the head and neck and will usually perform a neurologic examination, which includes a series of simple exercises to test strength, reflexes, coordination, and sensation. The doctor may ask questions to test short-term memory and related aspects of mental function.
Differentiating Between Migraine and Other Types of Headaches
Differentiating Between Migraines and Tension Headaches. Migraines and tension headaches have some similar characteristics, but also some important differences:
- Migraine pain is throbbing and while tension-type headache pain is usually a steady ache
- Migraine pain may affect only one side of the head while tension-type headache pain typically affects both sides of the head
- Migraine pain, but not tension-type pain, worsens with head movement
- Migraine headaches, but not tension-type headaches, may be accompanied by nausea or vomiting, sensitivity to light and sound, or aura
[For more information, see In-Depth Report #11: Tension-type headache.]
Differentiating Between Migraines and Sinus Headaches. Many primary headaches, including migraine, are misdiagnosed as sinus headaches, causing patients to be treated inappropriately with antibiotics. Nearly 9 in 10 patients who think they have sinus headaches actually have or probably have had a migraine. Sinus headaches occur in the front of the face, usually around the eyes, across the cheeks, or over the forehead. They are usually mild in the morning and increase during the day and are usually accompanied by fever, runny nose, congestion, and general debilitation. It is also possible for patients to have migraines with sinus symptoms.
A real sinus headache is a sign of an acute sinus infection, which responds to treatment with antibiotics. If sinus headches seem to recur, the patient is likely actually experiencing migraines.
Imaging Tests
Imaging tests of the brain may be recommended under the following circumstances.
If the results of the history and physical examination suggest neurologic problems such as:
- Changes in vision
- Muscle weakness
- Fever
- Stiff neck
- Changes in the way someone walks
- Changes in someone's mental status (disorientation)
For patients with headache:
- That wakes them at night
- A sudden or severe headache, or a headache that is the worst headache of someone's life
Imaging tests may also be recommended for:
- Patients with a history of cancer or weakened immune system
- New headaches in adults over 50 years, especially in the elderly. In this age group, it is particularly important to first rule out age-related disorders including stroke, low blood sugar (hypoglycemia), accumulation of fluid within the brain (hydrocephalus), and head injuries (usually from falls).
- Patients with worsening headache or headaches that do not respond to routine treatment.
The following tests may be used:
- A CT (computed tomography) scan may be ordered to rule out brain disorders or headaches caused by chronic sinusitis.
- X-rays and other tests may also be used if sinusitis is strongly suspected.
- A neck x-ray can reveal arthritis or spinal problems.
- Other imaging tests include an MRI (magnetic resonance imaging), EEG (electroencephalogram), lumbar puncture, ultrasound testing, and cerebral angiography, positron emission tomography (PET), and single-photon emission computed tomography (SPECT). These tests are only performed if there is reason to suspect an underlying disease or as part of clinical studies.
Symptoms that Could Indicate a Serious Underlying Condition
Headaches indicating a serious underlying problem, such as cerebrovascular disorder or malignant hypertension, are uncommon. (It should again be emphasized that a headache is not a common symptom of a brain tumor.) People with existing chronic headaches, however, might miss a more serious condition by believing it to be one of their usual headaches. Such patients should call a doctor promptly if the quality of a headache or accompanying symptoms has changed. Everyone should call a doctor for any of the following symptoms:
- Sudden, severe headache that persists or increases in intensity over the following hours, sometimes accompanied by nausea, vomiting, or altered mental states (possible hemorrhagic stroke)
- Sudden, very severe headache, worse than any headache ever experienced (possible indication of hemorrhage or a ruptured aneurysm)
- Chronic or severe headaches that begin after age 50
- Headaches in the back of the head accompanied by other symptoms, such as memory loss, confusion, loss of balance, changes in speech or vision, or loss of strength in or numbness or tingling in arms or legs (possibility of small stroke in the base of the skull)
- Headaches after head injury, especially if drowsiness or nausea are present (possibility of hemorrhage)
- Headaches accompanied by fever, stiff neck, nausea and vomiting (possibility of spinal meningitis)
- Headaches that increase with coughing or straining (possibility of brain swelling).
- A throbbing pain around or behind the eyes or in the forehead accompanied by redness in the eye and perceptions of halos or rings around lights (possibility of acute glaucoma)
- A one-sided headache in the temple in elderly people; the artery in the temple is firm and knotty and has no pulse; scalp is tender (possibility of temporal arteritis, which can cause blindness or even stroke if not treated)
- Sudden onset and then persistent, throbbing pain around the eye possibly spreading to the ear or neck unrelieved by pain medication (possibility of blood clot in one of the sinus veins of the brain)
Treatment Approaches
Migraine treatment involves both treating acute attacks when they occur, and developing preventive strategies for reducing the frequency and severity of attacks.
Treating Migraine Attacks
Many effective headache remedies are available for treating a migraine attack. Still, many patients are treated with unapproved drugs, including opoids and barbiturates that can be potentially addictive or dangerous.
The main types of medications for treating a migraine attack are:
- Pain relievers (usually nonprescription nonsteroidal anti-inflammatory drugs [NSAIDs] or acetaminophen)
- Ergotamines
- Triptans
It is best to treat a migraine attack as soon as symptoms first occur. Doctors generally recommend starting with nonprescription pain relievers for mild-to-moderate attacks. If migraine pain is severe, a prescription version of an NSAID may be recommended. A triptan is generally the next drug of choice. Ergotamine drugs tend to be less effective than triptans, but are helpful for some patients. Depending on the severity of the attacks, and accompanying symptoms, the doctor may recommend taking a triptan or ergotamine drug in tablet, injection, or suppository form. The doctor may also prescribe specific medications for treating symptoms such as nausea.
Try to guard against rebound effect. Nearly all drugs used for migraine can cause rebound headache, and patients should not take any the drugs more than 9 days per month. If you find that you need to use acute migraine treatment more frequently, talk to your doctor about preventive medications.
Preventing Migraine Attacks
Preventive strategies for migraine include both drug treatment and behavioral therapy or lifestyle adjustments.
Patients should consider using preventive migraine drugs if they have:
- Migraines that are not helped by acute treatment drugs
- Frequent attacks (more than once per week)
- Side effects from acute treatment drugs or contraindications to taking them
The main preventive drug treatments for migraine are:
- Beta-blocker drugs (usually propranolol [Inderal] or timolol [Blocadren]
- Anti-seizure drugs (usually divalproex [Depakote] or topiramate [Topamax]
- Tricyclic antidepressants {usually amitriptyline [Elavil])
A preventive medication strategy needs to be carefully tailored to an individual patient, taking into account the patients medical history and co-existing medical conditions. These drugs can have serious side effects.
A preventive medication is usually started at a low dose, and then gradually increased. It may take 2 - 3 months for a drug to achieve its full effect. Preventive treatment may be needed for 6 - 12 months or longer. Most patients take preventive medications on a daily basis, but some patients may use these drugs intermittently (for example, for preventing menstrual migraine).
Patients can also help prevent migraines by identifying and avoiding potential triggers, such as specific foods. Relaxation therapy and stress reduction techniques may also help. (See Lifestyle section below.)
Treatment Approaches for Children
Migraine Treatment for Children. Most children with migraines may need only mild pain relievers and home remedies (such as ginger tea) to treat their headaches. The American Academy of Neurologys practice guidelines for children and adolescents recommend the following drug treatments:
- For children age 6 years and older, ibuprofen (Advil) is recommended. Acetaminophen (Tylenol) may also be effective. Acetaminophen works faster than ibuprofen, but the effects of ibuprofen last longer.
- For adolescents age 12 years and older, sumaptriptan (Imitrex) nasal spray is recommended.
Migraine Prevention for Children. Non-medication methods, including biofeedback and muscle relaxation techniques may be helpful. If these methods fail, then preventive drugs may be used, although evidence is weak on the effectiveness of standard migraine preventive drugs in children.
Withdrawing from Medications
If medication overuse causes rebound migraines develop, the patients cannot recover without stopping the drugs. (If caffeine is the culprit, a person may need only to reduce coffee or tea drinking to a reasonable level, not necessarily stop drinking it altogether.) The patient can usually stop abruptly or gradually. The patient should expect the following:
- Most headache drugs can be stopped abruptly, but the patient should talk to their doctor first. Certain non-headache medications, such as anti-anxiety drugs or beta-blockers, require gradual withdrawal under medical supervision.
- If the patient chooses to taper off standard headache medications, withdrawal should be completed within three days.
- The patient may take other pain medicines during the first days. Examples of drugs that may be used include dihydroergotamine (with or without metoclopramide), NSAIDs (in mild cases), corticosteroids, or valproate.
- The patient must expect their headache to get worse after they stop taking their medications, no matter which method they use. Most people feel better within 2 weeks, although headache symptoms can persist up to 16 weeks (and in rare cases even longer).
- If the symptoms do not respond to treatment and cause severe nausea and vomiting, the patient may need to be hospitalized.
Medications for Treating Migraine Attacks
Many different medications are used to treat migraines. However, the Food and Drug Administration (FDA) has specifically approved only the following types of drugs for treating migraine attacks:
- Non-prescription drugs: Excedrin Migraine, Advil Migraine, Motrin Migraine Pain
- Prescription drugs: Triptans and ergotamine
Other types of drugs, including opioids and barbiturates, are sometimes prescribed off-label for migraine treatment. Opioids and barbiturates have not been approved by the FDA for migraine relief, and they can be addictive.
All FDA-approved migraine treatments are approved only for adults. No migraine products have officially been approved for use in children.
Pain Relievers
Some patients with mild migraines respond well to over-the-counter (OTC) painkillers, particularly if they take the medicine at the very first sign of an attack. OTC pain relievers, (also called analgesics), include:
- Nonsteroidal anti-inflammatory drugs such as ibuprofen (Advil, Motrin), naproxen (Aleve), and aspirin. The FDA-approved migraine products Advil Migraine and Motrin Migraine Pain both contain ibuprofen.
- Acetaminophen (Tylenol). The FDA-approved migraine product Excedrin Migraine contains acetaminophen, as well as aspirin and caffeine.
There are also prescription-only NSAIDs. These include diclofenac (Cataflam), which is taken by mouth, and ketorolac (Toradol), which is given by injection.
NSAID Side Effects. High dosages and long-term use of NSAIDs can increase the risk for heart attack, stroke, kidney problems, and stomach bleeding. Aspirin does not increase the risk for heart problems, but it can cause other NSAID-related side effects.
Triptans
Triptans (also referred to as serotonin agonists) were the first drugs specifically developed for use against migraine. They are the most important migraine drugs currently available. They help maintain serotonin levels in the brain, and so specifically target one of the major components in the migraine process.
Triptans are recommended as first-line drugs for adult patients with moderate-to-severe migraines when NSAIDs are not effective. Triptans have the following benefits:
- They are effective for most patients with migraine, as well as patients with combination tension and migraine headaches.
- They do not have the sedative effect of other migraine drugs.
- Withdrawal after overuse appears to be shorter and less severe than with other migraine medications
Sumatriptan. Sumatriptan (Imitrex) has the longest track record and is the most studied of all triptans. It is available as a fast-dissolving pill, nasal spray, or injection. Injected sumatriptan works the fastest of all the triptans and is the most effective, but it can cause pain at the injection site. The nasal spray form bypasses the stomach and is absorbed more quickly than the oral form. Some patients report relief as soon as 15 minutes after administration. The spray tends to work less well when a person has nasal congestion from cold or allergy. It may also leave a bad taste. Sumatriptan is effective for many patients, but headache recurs in 20 - 40% of people within 24 hours after taking the drug.
In 2008, the FDA approved a drug (Treximet) that combines in one pill both sumatriptan and the anti-inflammatory pain reliever naproxen (Aleve, Naprosyn). Some studies have found that the combination of sumatriptan and naproxen works better for migraine relief than either drug alone.
Other Triptans. Newer triptans include almotriptan (Axert), zolmitriptan (Zomig), naratriptan (Amerge), rizatriptan (Maxalt), frovatriptan (Frova), and eletriptan (Relpax). Comparison studies with sumatriptan suggest that some of the newer drugs may have fewer side effects and may be better for providing immediate, sustained, and consistent pain relief. Triptans are also being investigated for prevention under certain circumstances, such as menstrual migraines, but benefits appear limited.
Although triptans, (like all migraine medications), are approved only for adults, researchers are investigating zolmitriptan for treating migraines in adolescents.
Side Effects. Side effects of triptans may include:
- Tingling and numbness in the toes
- Sensations of warmth
- Discomfort in the ear, nose, and throat
- Nausea
- Drowsiness
- Dizziness
- Muscle weakness
- Heaviness, pain, or both in the chest. (About 40% of patients taking sumatriptan experience these symptoms, and they are major factors in discontinuing the drug. Newer drugs, such as almotriptan, produce fewer chest symptoms.)
- Rapid heart rate
Complications of Triptans. The following are potentially serious problems.
- Complications of heart and circulation. Triptans narrow (constrict) blood vessels. Because of this effect, spasms in the blood vessels may occur and cause serious side effects, including stroke and heart attack. Such events are rare, but patients with an existing history or risk factors for these conditions should generally avoid triptans.
- Serotonin syndrome. Serotonin syndrome is a life-threatening condition that occurs from an excess of the brain chemical serotonin. Triptan drugs used to treat migraine, as well as certain types of antidepressant medications, can increase serotonin levels. These antidepressant drugs include serotonin reuptake inhibitors (SSRIs) -- such as fluoxetine (Prozac), paroxetine (Paxil), and sertraline (Zoloft) -- and selective serotonin/norepinephrine reuptake inhibitors (SNRIs), such as duloxetine (Cymbalta) and venlafaxine (Effexor). It is very important that patients not combine a triptan drug with a SSRI or SNRI drug. Serotonin syndrome is most likely to occur when starting or increasing the dose of a triptan or antidepressant drug. Symptoms include restlessness, hallucinations, rapid heartbeat, tremors, increased body temperature, diarrhea, nausea, and vomiting. You should seek immediate medical care if you have these symptoms.
The following people should avoid triptans or take them with caution and only with the advisement of a doctor:
- Anyone with a history or any risk factors for stroke, uncontrolled diabetes, high blood pressure, or heart disease.
- People taking antidepressants that increase serotonin levels.
- Children and adolescents. They may be safe, but controlled studies are needed to confirm this. (Triptans should not, in any case, be the first-line treatment for children.)
- People with basilar or hemiplegic migraines. (Triptans are not indicated for these migraineurs.)
- There is no evidence to date of any higher risk for birth defects in pregnant women who take triptans. Still, women should be cautious about taking any medications during pregnancy and discuss any possible adverse effects with their doctors.
Ergotamine (Ergot)
Drugs containing ergotamine (commonly called ergots) constrict smooth muscles, including those in blood vessels, and are useful for migraine. They were the first anti-migraine drugs available. Ergotamine is available by prescription in the following preparations:
- Dihydroergotamine (DHE) is an ergot derivative. It is administered as a nasal spray form (Migranal) or by injection, which can be performed at home.
- Ergotamine is available tablets taken by mouth, tablets taken under the tongue (sublingual), and rectal suppositories. Some of the tablet forms of ergotamine contain caffeine.
Ergotamines role since the introduction of triptans is now less certain. Only the rectal forms of ergotamine are superior to rectal triptans. Injected, oral, and nasal-spray forms are all inferior to the triptans. Ergotamine may still be helpful for patients with status migrainous or those with frequent recurring headaches.
Side Effects. Side effects of ergotamine include:
- Nausea
- Dizziness
- Tingling sensations
- Muscle cramps
- Chest or abdominal pain
The following are potentially serious problems:
- Toxicity. Ergotamine is toxic at high levels.
- Adverse effects on blood vessels. Ergot can cause persistent blood vessel contractions, which may pose a danger for people with heart disease or risk factors for heart attack or stroke.
- Internal scarring (fibrosis). Scarring can occur in the areas around the lungs, heart, or kidneys. It is often reversible if the drug is stopped.
The following patients should avoid ergots:
- Pregnant women. Ergots can cause miscarriage.
- People over age 60.
- Patients with serious, chronic health problems, particularly those of the heart and circulation.
Ergotamine can interact with other medications, such as antifungal drugs and some antibiotics. All ergotamine products approved by the Food and Drug Administration (FDA) contain a "black box" warning in the prescription label explaining these drug interactions. In 2007, the FDA pulled 15 unapproved older ergotamine products off the market, in part because they lacked this warning label. The five FDA-approved ergotamine products that remain on the market are:
- Migergot suppository (marketed by G and W Labs)
- Ergotamine Tartrate and Caffeine tablets (marketed by Mikart and West Ward)
- Cafergot tablets (marketed by Sandoz)
- Ergomar sublingual tablets (marketed by Rosedale Therapeutics)
Opioids
If the pain is very severe and does respond to other drugs, doctors may try painkillers containing opioids. Opioid drugs include morphine, codeine, meperidine (Demerol), and oxycodone (Oxycontin)]. Butorphanol is an opioid in nasal spray form that may be useful as a rescue treatment when others fail.
Opioids are not approved for migraine treatment and should not be used as first-line therapy. Nevertheless, many opioid products are prescribed to patients with migraine, sometimes with dangerous results. In 2007, following reports of several drug-related deaths, the Food and Drug Administration warned that the cancer pain pill fentanyl (Fentora) should not be used to treat patients with migraine or others conditions for which the drug is not specifically approved.
Side Effects. Side effects for all opioids include drowsiness, impaired judgment, nausea, and constipation. There is a risk for addiction, and these drugs can become ineffective with long-term use for chronic migraines. Doctors should not prescribe opioids to patients at risk for drug abuse, including those with personality or psychiatric disorders.
Drugs Used for Nausea and Vomiting
Metoclopramide (Reglan) is used in combinations with other drugs to treat the nausea and vomiting that occurs with other drugs and with migraine itself. Metoclopramide and other anti-nausea drugs, such as domperidone (Motilium), may help the intestine better absorb migraine medications.
Medications for Preventing Migraine Attacks
The Food and Drug Administration has approved four drugs for prevention of migraine:
- Propanolol (Inderal)
- Timolol (Blacadrene)
- Divalproex sodium (Depakote)
- Topiramate (Topamax)
Propanolol and timolol are beta-blocker drugs. Divalproex and topiramate are anti-seizure drugs. Many other drugs are also being used or investigated for preventing migraines.
Beta-Blockers
Beta-blockers are usually prescribed to reduce high blood pressure. Some beta-blockers, however, are also useful in reducing the frequency of migraine attacks and their severity when they occur. Propranolol (Inderal) and timolol (Blocadren) have been approved specifically for prevention of migraine. Metoprolol (Toprol), atenolol (Tenormin), and nadolol (Corgard) are also being studied for migraine prevention.
Side Effects. Side effects may include:
- Fatigue and lethargy are common.
- Some people experience vivid dreams and nightmares, depression, and memory loss.
- Dizziness and lightheadedness may occur upon standing.
- Exercise capacity may be reduced.
- Other side effects may include cold extremities, asthma, decreased heart function, gastrointestinal problems, and sexual dysfunction.
If side effects occur, the patient should call a doctor, but it is extremely important not to stop the drug abruptly. Some evidence suggests that people with migraines who have had a stroke should avoid beta-blockers.
Anti-Seizure Drugs
Anti-seizure drugs, also called anti-epileptic drugs or anticonvulsants, affect the neurotransmitter gamma aminobutyric acid (GABA), which helps prevent nerve cells from over-firing. GABA may also have a role in migraines. These drugs are commonly used for treating epilepsy and bipolar disorder. Anti-seizure drugs are more expensive than other drugs. They also have significant side effects. Divalproex sodium (Depakote) and topiramate (Topamax) are the only anti-seizure drugs that are approved for migraine prevention. However, if patients do not respond to either of these drugs, doctors may try other types of anti-seizure medications.
Divalproex Sodium (Depakote). Divalproex sodium (Depakote) was first approved in 1996 for migraine prevention. A once-a-day formulation of divalproex (Depakote ER) was approved in 2000. Doctors sometimes prescribe a similar drug, valproate (Depakene). Pregnant patients should not use these drugs, as they may cause birth defects.
Topiramate (Topamax). In 2004, the Food and Drug Administration approved topiramate for prevention of migraines in adults. Studies from 2006 indicated that the drug works well when used on a long-term basis. Patients in these studies experienced significantly fewer migraines for up to 14 months. Topiramates most common side effect is a tingling sensation in the arms and legs. Weight loss is also a side effect. In clinical trials, patients lost an average of 3.8% of their body weight.
Other Anti-Seizure Drugs Under Investigation. Researchers are studying other types of anti-seizure drugs for migraine prevention. These include levetiracetam (Keppra), gabapentin (Neurontin), pregabalin (Lyrica), zonisamide (Zonegran), and tiagabine (Gabitril).
Side Effects. Anti-seizure medication's side effects vary by drug but may include:
- Nausea and vomiting
- Diarrhea
- Cramps
- Hair loss
- Dizziness
- Sleepiness
- Blurred vision
- Weight gain
- Valproate and divalproex can cause serious side effects of inflammation of the pancreas (pancreatitis) and damage to the liver
Tricyclic and Other Antidepressants
Amitriptyline (Elavil, Endep), a tricyclic antidepressant drug, has been used for many years as a first-line treatment for migraine prevention. It may work best for patients who also have depression or insomnia. Tricyclics can have significant side effects, including disturbances in heart rhythms, and can be fatal in overdose. Although other tricyclic antidepressants may have fewer side effects than amitritpyline, they do not appear to be particularly effective for migraine prevention.
Researchers have investigated newer types of antidepressants, including serotonin-reuptake inhibitors (SSRIs), such as fluoxetine (Prozac). However, studies to date do not indicate that SSRIs are helpful for migraine prevention.
Investigational Treatments for Preventing Migraines
Muscle Relaxants. Botulinum toxin A (Botox) injection, a common wrinkle treatment, causes small muscles to relax. It is being studied as a preventive approach for reducing the frequency of migraine attacks and patients reliance on pain medications. To date, there is still no proven benefit. More research is needed.
Angiotensin Converting Enzyme Inhibitors. Commonly used for treating high blood pressure, angiotensin converting enzyme (ACE) inhibitors block the production of the protein angiotensin, which constricts blood vessels and may be involved in migraine. Studies using the ACE inhibitor lisinopril (Prinivil, Zestril) have reported significant reduction in migraine attacks.
Angiotensin-Receptor Blockers. Angiotensin-receptor blockers (ARBs) are another type of high blood pressure medications. ARBs have actions similar to ACE inhibitors, but may have fewer side effects. In placebo-controlled studies, the ARB candesartan (Atacand) helped reduce migraine frequency.
Neurostimulation Devices. Researchers are investigating a transcranial magnetic stimulation (TMS) device to help stop migraines before they occur. The hair dryer-size device is held to the back of the head and delivers quick magnetic pulses. The device is used when a patient experiences the first signs of a migraine. Other types of nerve stimulation devices are also under investigation.
Nasal Devices. New types of nasal sprays and powders are being researched. Some of them use capsaicin, the chemical found in cayenne peppers, to help relieve pain.
Non-Drug Treatments and Lifestyle Changes
There are several ways to prevent migraine attacks. You should try a healthy diet, the right amount of sleep, and non-drug approaches (such as biofeedback) first for prevention.
Behavioral Treatments
Behavioral techniques that reduce stress and empower the patient may help some people with migraines. They generally include:
- Biofeedback therapy
- Relaxation techniques
- Cognitive-behavioral therapy
Behavioral methods may help counteract the tendency for muscle contraction and uneven blood flow associated with some headaches. They may be particularly beneficial for children, adolescents, and pregnant and nursing women, and anyone who cannot take most migraine medications. Studies generally find that these techniques work best when used in combination with medications.
Biofeedback. Many studies have demonstrated that biofeedback is effective for reducing migraine headache frequency. Biofeedback training teaches the patient to monitor and modify physical responses, such as muscle tension, using special instruments for feedback.
Relaxation Therapy. Relaxation therapy techniques include relaxation response, progressive muscle relaxation, visualization, and deep breathing. Muscle relaxation techniques are simple and easy to learn, and can be effective. Some patients may also find that relaxation techniques combined with applying a cold compress to the forehead may help provide some pain relief during attacks. Some commercially available products use a pad containing a gel that cools the skin for several hours.
Cognitive Behavioral Therapy. Cognitive-behavioral therapy (CBT) teaches patients how to recognize and cope with stressors in their life. It can help patients understand how their thoughts and behavior patterns may affect their symptoms, and how to change the way the body responds to anticipated pain. CBT may be included with stress management techniques. Research indicates that CBT is most effective when combined with relaxation training or biofeedback.
Acupuncture
Acupuncture is a Chinese medicine technique that uses thin needles to stimulate specific points aligned with energy pathways in the body. Studies have showed mixed results on the benefits of acupuncture for preventing migraine.
Lifestyle Changes
Making a few minor changes in your lifestyle can make your migraines more bearable. Improving sleep habits is important for everyone, and especially those with headaches. What you eat also has a huge impact on migraines, so dietary changes can be extremely beneficial, too.
Avoid Food Triggers. Avoiding foods that trigger migraine is an important preventive measure. Common food triggers include monosodium glutamate (MSG), processed lunch meats that contain nitrates, dried fruits that contain sulfites, aged cheese, alcohol and red wine, chocolate, and caffeine. However, peoples responses to triggers differ. Keeping a headache diary that tracks diet and headache onset can help identify individual food triggers.
Eat Regularly. Eating regularly is important to prevent low blood sugar. People with migraines who fast periodically for religious reasons might consider taking preventive medications.
Stay Physically Active. Exercise is certainly helpful for relieving stress. An analysis of several studies reported that aerobic exercise in particular might help prevent migraines. It is important, however, to warm up gradually before beginning a session, since sudden, vigorous exercise might actually precipitate or aggravate a migraine attack.
Limit Estrogen-Containing Medications. Medications that contain estrogen, such as oral contraceptives and hormone replacement therapy, may trigger migraines or make them worse. Talk to your doctor about whether you should stop taking these types of medications or reduce the dosage.
Herbs and Supplements
Manufacturers of herbal remedies and dietary supplements do not need Food and Drug Administration approval to sell their products. Just like a drug, herbs and supplements can affect the body's chemistry, and therefore have the potential to produce side effects that may be harmful. There have been several reported cases of serious and even lethal side effects from herbal products. Patients should always check with their doctors before using any herbal remedies or dietary supplements.
Riboflavin (Vitamin B2). Some studies have found that people who take vitamin B2 experience a reduction in the frequency of migraine attacks (although not on duration or severity). Vitamin B2 is generally safe, although some people taking high doses develop diarrhea.
Magnesium Supplements. Some studies have reported a higher rate of magnesium deficiencies in some patients with migraine, such as those with menstrual migraines. Magnesium helps relax blood vessels. Some patients report that magnesium supplements help provide relief.
Feverfew. Feverfew is the most studied herbal remedy for headaches and may help in some cases. However, like all effective headache remedies, overuse can cause a rebound effect.
Fish Oil. Some studies suggest that omega-3 fatty acids, which are found in fish oil, have anti-inflammatory and nerve protecting actions. These fatty acids can be found in oily fish, such as salmon, mackerel, or sardines. They can also be obtained in supplements of specific omega-3 compounds (DHA-EPA).
Ginger. In general, herbal medicines should never be used by children or pregnant or nursing women without medical counsel. One exception may be ginger, which has no side effects and can be eaten in powder or fresh form, as long as quantities are not excessive. Some people have reported less pain and frequency of migraines while taking ginger, and children can take it without danger. Ginger is also a popular home remedy for relieving nausea.
Resources
- www.headaches.org -- National Headache Foundation
- www.achenet.org -- American Headache Society
- www.aan.com -- American Academy of Neurology
- www.ninds.nih.gov -- National Institute of Neurological Disorders and Stroke
- www.clinicaltrials.gov -- Find clinical trials
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Reviewed By: Harvey Simon, MD, Editor-in-Chief, Associate Professor of Medicine, Harvard Medical School; Physician, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
