sQUIZ your knowledge! Hypertrophic plaques on the gluteal clefts

Affiliations

• ¹ Department of Dermatology, Japanese Red Cross Kitami Hospital, Kitami, Japan.
• ² Department of Dermatology, Japanese Red Cross Kitami Hospital, Kitami, Japan, Department of Dermatology, Asahikawa Medical University, Asahikawa, Japan.
• ³ Department of Dermatology, Asahikawa Medical University, Asahikawa, Japan.