Cutaneous malasseziasis: four case reports of atypical dermatitis and onychomycosis caused by Malassezia.
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.
Zhao
Ying
Y
Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China.
Li
Li
L
Wang
Jia-jun
JJ
Kang
Ke Fei
KF
Zhang
Qiang Qiang
QQ
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
D007654:Ketoconazole