Great toenail onychomycosis caused by Syncephalastrum racemosum.

Nondermatophyte molds are fungi found in soil and decaying plant debris and are generally considered to be uncommon or secondary pathogens of diseased nails. Prevalence rates of onychomycoses caused by nondermatophyte molds range between 1.45 percent and 17.60 percent. The most common nondermatophyte molds associated with nail disease are Scopulariopsis, Scytalidium, Fusarium, Aspergillus and Onychocola canadensis. Syncephalastrum racemosum, a nondermatophyte mold, belongs to the class Zygomycetae. Only one well-documented case of human disease attributed to this organism has been described. We describe a 45-year-old man with culture proven toenail onychomycosis due to Syncephalstrum racemosum.