[Disseminated plane xanthoma with photosensitization].

A case of diffuse normolipemic plane xanthome showing no association with systemic disease (multiple myeloma, leukemia, reticulosis, or dysglobulinaemia), in a 50 year old female, is reported. The patient presented hypersensitivity to the erythrogenic spectrum with pathological response and lowered MED. The B lymphocytes in the peripherical blood was raised. The authors postulated that B lymphocytes probably play an important role in the pathogenesis of the skin light-induced reactions.