• The case history of a patient with nondermatophytic onychomycosis of the great toenail due to Fusarium oxysporum is presented. The occurrence of Fusarium onychomycosis, although not rare, is infrequent. This fungus may not be recovered from clinical material if the specimen is cultured only on media containing cycloheximide.

(Arch Dermatol 116:699-700, 1980)