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photoallergic contact dermatitis
Pathology:
- results when sunlight acts on an ingredient in a topical agent & the patient is allergic to the sunlight-changed chemical
- neither exposure to sunlight alone or exposure to the topical agent alone causes a problem, but when the patient applies the topical agent & goes out into the sunlight, eczema develops
Special laboratory:
- photopatch testing
General
contact dermatitis (exogenous eczema)
References
- Scalf LA et al
Photopatch testing of 182 patients: A 6-year experience at the
Mayo Clinic.
Dermatitis 2009 Jan/Feb; 20:44.
PMID: 19321120