Malassezia Folliculitis

Abstract

Malassezia folliculitis, also referred to as Pityrosporum folliculitis, is an underdiagnosed condition that mimics acne vulgaris. This unique type of folliculitis affects the back, chest, and upper arms in healthy teenagers and young adults and can also be seen in patients with underlying immunosuppression. Malassezia folliculitis is caused by an overgrowth of Malassezia yeast that thrives in the sebaceous rich environment of the hair follicle. Direct microscopic examination with potassium hydroxide and skin biopsy can be used to identify the presence of yeast within the follicle thus confirming this often elusive diagnosis.