title: Flagellate mushroom (Shiitake) dermatitis and photosensitivity.
abstract: Flagellate skin lesions occur in some patients after eating the mushroom Lentinus edodes, and they are called shiitake dermatitis in Japan. We describe a 44-year-old man with such skin lesions on his trunk after eating L. edodes, who developed as well photosensitive skin lesions on exposed areas. Skin phototesting with UVB did not show a decreased minimum erythema dose; UVA irradiation provoked an erythematous lesion with nonspecific histological changes. Analysis of the case histories of 94 Japanese patients with shiitake dermatitis revealed that 44 (47%) also developed dermatitis on the skin exposed to sunlight. UVA photodermatitis has not been emphasized in previous reports. The relationship to bleomycin flagellate dermatitis is discussed.
authors.affiliation: Department of Dermatology, Hirosaki University School of Medicine, Hirosaki, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Hanada
authors.forename: I
authors.initials: I
authors.lastname: Hashimoto
mesh_terms: D000328:Adult; D003872:Dermatitis / Q000209:etiology*; D005502:Food / Q000009:adverse effects; D005512:Food Hypersensitivity / Q000209:etiology / Q000276:immunology; D006801:Humans; D020074:Lentinula / Q000276:immunology; D008297:Male; D010787:Photosensitivity Disorders / Q000209:etiology*; D012882:Skin Tests