J Clin Aesthet Dermatol. 2020;13(12):12–17. by Khaled Gharib, MD; Asmaa Mostafa, MSc; and Ayman Elsayed, MD Drs. Gharib, Mostafa, and Elsayed are with the Dermatology Department, Faculty of Medicine, at
Background. Inverse psoriasis is characterized by erythematous nonscaly plaques in intertriginous regions. Similarly, erythrasma, a superficial infection caused by Corynebacterium minutissimum (C. minutissimum), is also found in skin folds with red-brown lesions, making the distinction between psoriasis and erythrasma difficult.