Pityrosporum folliculitis

    Also known as: Malassezia folliculitis

    Clinical Features:

    • Caused by Malassezia furfur or Malassezia ovale
    • Pruritic papules on the trunk, shoulders or face of young to middle-aged adults
    • Greasy skin may be a predisposing factor.

    Histologic Features:

    • Dilated hair follicles with keratin plugs containing fungal spores
    • Intra- and perifollicular inflammatory infiltrate comprised of neutrophils, lymphocytes and histiocytes
    • Intra- and perifollicular mucin pools
    • Hair follicles may rupture, inciting a foreign body granulomatous reaction.
    External Links:

    Cases associated with this book:

  • Pityrosporum folliculitis
    Author: Stephen Lyle, M.D., Ph.D.

    Conference: DermatopathologyConsultations.com Teaching Collection
  • Pityrosporum folliculitis
    Author: Artur Zembowicz M.D. Ph.D.