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Gas plant (Dictamnus albus) phytophotodermatitis simulating poison ivy
Canadian Medical Association Journal
|April 1, 1984
Summary
A man developed a recurring itchy rash on his arm each summer. The cause was identified as gas plant phytophotodermatitis from Dictamnus albus exposure and sunlight.
Area of Science:
- Dermatology
- Botany
- Toxicology
Background:
- Recurrent summer rash on the forearm.
- Initial misdiagnosis as poison ivy dermatitis.
- Absence of known allergens in the patient's garden.
Observation:
- Patient presented with an itchy rash mimicking burns.
- Lesions appeared annually on the left forearm during summer.
- Discovery of Gas Plant (Dictamnus albus) in the garden.
Findings:
- Occlusive patch testing with Dictamnus albus leaf cuttings.
- Positive reaction upon subsequent sun exposure.
- Diagnosis of Gas Plant phytophotodermatitis.
Implications:
- Highlights Dictamnus albus as a cause of phytophotodermatitis.
- Importance of accurate plant identification in diagnosing dermatitis.
- Educating patients on potential phototoxic plant reactions.
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