Department of Dermatology, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China.

Shiitake dermatitis (SD) is correlated with the ingestion of raw or undercooked shiitake mushrooms (SMs) and is more common in countries where SMs are habitually eaten. The condition was first reported in Japan by Nakamura in 1977^[1] and has since been recorded worldwide. The associated reports are rare in the domestic. This disease is characterized by intensely pruritic isolated or grouped papules or papulovesicles with whiplash-striped, infiltrated erythema that arise in a pattern consistent with the Köbner phenomenon because of stripe-like scratching, thus differing the lesions from the immediate onset of dermographism^[1].

Department of Dermatology, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China.

Shiitake dermatitis (SD) is correlated with the ingestion of raw or undercooked shiitake mushrooms (SMs) and is more common in countries where SMs are habitually eaten. The condition was first reported in Japan by Nakamura in 1977^[1] and has since been recorded worldwide. The associated reports are rare in the domestic. This disease is characterized by intensely pruritic isolated or grouped papules or papulovesicles with whiplash-striped, infiltrated erythema that arise in a pattern consistent with the Köbner phenomenon because of stripe-like scratching, thus differing the lesions from the immediate onset of dermographism^[1].