Treatment may not be needed if the hives are mild. They may disappear on their own. To reduce itching and swelling:

• Apply cool compresses to the welts. This may reduce swelling and pain. If a large part of your body is affected, soak in a cool bath. Avoid hot baths or showers.
• Avoid irritating the area with tight-fitting clothing.
• Apply Calamine lotion.
• Take antihistamines.

If your reaction is severe, especially if the swelling involves your throat, you may require an emergency shot of epinephrine (adrenaline) or steroids. Hives in the throat can obstruct your airway, making it difficult to breathe.

• Anaphylaxis
• Life-threatening airway obstruction, if swelling occurs in the throat

Call 911 if you experience:

• Tightness in your throat
• Shortness of breath
• Tongue or face swelling
• Fainting
• Wheezing

Call your health care provider if the hives are severe, uncomfortable, and do not respond to self-care.