Fungal melanonychia: ungual phaeohyphomycosis caused by Wangiella dermatitidis.
A 51-year-old female Japanese patient developed black pigmentation affecting both big toe-nails. Direct potassium hydroxide examination of the nail tissue demonstrated clusters of spherical dematiaceous cells, toruloid hyphae, and septate hyphae. Wangiella dermatitidis was repeatedly isolated from the affected toe-nail lesions. This case represents the first documented case of ungual phaeohyphomycosis, 'fungal melanonychia,' caused by the dematiaceous fungus W. dermatitidis. The patient was successfully treated with a topical solution of bifonazole.
Matsumoto
T
T
Department of Dermatology, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
Matsuda
T
T
Padhye
A A
AA
Standard
P G
PG
Ajello
L
L
D005093:Exophiala / Q000302:isolation & purification*; D005260:Female; D005533:Foot Dermatoses / Q000382:microbiology; D006801:Humans; D008875:Middle Aged; D014009:Onychomycosis / Q000382:microbiology*