Pityosporum/Malassezia folliculitis

  • Etiologia
    • Excessive growth of M. furfur and M. globosa within hair follicle
  • Apresentação clínica
    • Pruritic follicular papules and pustules on the trunk, arms, neck and occasionally the face
    • Inflammatory
    • Monomorphic
    • Folliculitis that is super itchy
  • Fisiopatologia
    • Yeast products and free fatty acids produced from the fungal lipase cause inflammation (similar to acne - c. acnes can convert sebum in short chain fatty acids that cause inflammation)
  • Diagnóstico
    • KOH: only yeast forms are observed, no hyphal - no “spaghetti and meatballs” like pityriasis versicolor
  • Tratamento
    • Uma dose de fluconazol (antigamente cetoconazol - evitar)
    • 2,5% selenium sulfide applied overnight
    • notion image