Microdistribution None

Macrodistribution: Exposed skin will be heavily involved, while covered areas are protected or minimally affected. Doubly covered skin areas are spared except in instances where the antigen is transferred from the hand to the anogenital region. The palmar and plantar skin seldom reacts despite heavy exposure. Airborne exposure from burning toxicodendron leaves and stems frequently affects the face and neck (see Photo 27).


1. Streaks and linear plaques of vesicles on an erythematous plaque are characteristic (see Photos 24,25).

2. Large irregular plaques are sometimes present due to spread from contaminated palms to other skin areas. Occasionally, recognizable handprints can be seen.

3. Confluent lesions are common with airborne exposure (see Photo 27).

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