Treating Poison Ivy, Oak, and Sumac Still No Magic Bullet-But a Range of Options, Old and New

摘要

Urushiol-induced contact dermatitis usually starts with itching, followed by redness and blistering. If there's no itching, the dermatitis is probably not caused by urushiol. Mild cases may cause only redness and itching. In moderate cases, blisters and lines of erythema and red papules typically follow. The affected areas may swell and have open, weeping lesions. In more severe cases, extensive, diffuse redness and swelling can occur along with large blisters and severe, disabling itching or pain.