Pityrosporum folliculitis

Pityrosporum folliculitis or Malassezia folliculitis is a skin condition caused by infection by pityrosporum yeast.

The skin of the upper trunk area including the back, chest, arms and sometimes the neck is often affected and this condition is often seen in young to middle aged adults, although it has been known to occur in adults well into their sixties, and can also be found on the lower extremities as well. Its diagnosis is based on the pruritic (itchy) papulopustules found in a follicular pattern in these regions.