Related Experiment Video
Updated: Aug 6, 2026

A Mouse Ear Model for Allergic Contact Dermatitis Evaluation
Published on: March 24, 2023
Gas plant (Dictamnus albus) phytophotodermatitis simulating poison ivy
Abstract:
A 48-year-old man presented with an itchy rash that resembled superficial burns or cane marks on his left forearm; similar lesions had appeared every summer for 5 years. Poison ivy dermatitis had been the initial diagnosis, but the patient knew that this plant was absent from his well tended garden. A visit to the garden revealed the gas plant Dictamnus albus, and occlusive patch testing with leaf cuttings produced a reaction after the skin was exposed to sunlight. Gas plant phytophotodermatitis was diagnosed.
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