Dept. of Dermatology - University of Iowa College of Medicine. Erythrasma A superficial infection of groin, axillae and toe webs caused by Corynebacterium minutissimum leading to pigmentation of pale skin or depigmentation of dark skin. It may fluoresce coral pink under a Woods lamp and be mistaken for a fungal infection.
Treatment is with oral erythromycin.
Five days treatment is usually enough but 2-3 weeks may be required. Erythrasma Clinical Resources Corynebacterium minutissimum . It occurs most frequently during adolescence and in heavier individuals.