• A red rash and extreme itching.
• The rash erupts in streaks or patches where the plant touched the skin.
• The rash includes red bumps and may also form large, weeping blisters.
• The reaction can vary from mild to severe. Hospitalization is sometimes required.

The rash usually appears within a couple of days after contact with the plant's oils. The worst stage is often from days 4 to 7. The rash may last for 1 to 3 weeks.