title: Cutaneous malasseziasis: four case reports of atypical dermatitis and onychomycosis caused by Malassezia.
abstract: BACKGROUND
  This study investigates four special cases associated with Malassezia.
  
  
  METHODS
  The special clinical manifestations, mycologic examination, and treatment were reviewed intensively.
  
  
  RESULTS
  An abundance of Malassezia hyphae were found in the scales of the three cases presenting with erythematous patches and in another case presenting with dystrophic nails. Malassezia globosa was identified and confirmed by culture. Antifungal agents were effective in the treatment of all cases.
  
  
  CONCLUSIONS
  Malassezia is an opportunistic fungus that may induce dermatosis other than classical pityriasis versicolor. Hyphae from the lesions may be induced by a change in the microenvironment of the fungus caused by the local application of corticosteroids.
authors.affiliation: Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhao
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.forename: Jia-jun
authors.initials: JJ
authors.lastname: Wang
authors.forename: Ke Fei
authors.initials: KF
authors.lastname: Kang
authors.forename: Qiang Qiang
authors.initials: QQ
authors.lastname: Zhang
mesh_terms: D000287:Administration, Topical; D000328:Adult; D001707:Biopsy, Needle; D002675:Child, Preschool; D003881:Dermatomycoses / Q000175:diagnosis* / Q000188:drug therapy; D005260:Female; D005500:Follow-Up Studies; D006229:Hand Dermatoses / Q000175:diagnosis* / Q000188:drug therapy; D006801:Humans; D007150:Immunohistochemistry; D007654:Ketoconazole / Q000627:therapeutic use; D008290:Malassezia / Q000302:isolation & purification*; D008297:Male; D016533:Mycological Typing Techniques; D014009:Onychomycosis / Q000175:diagnosis* / Q000188:drug therapy; D012494:Sampling Studies; D012720:Severity of Illness Index; D016896:Treatment Outcome
chemical_list: D007654:Ketoconazole