Table 1.

Major causes of onychomycosis

Dermatophyte fungi
Epidermophyton floccosum
 Trichophyton mentagrophytes
 Trichophyton rubrum
Nondermatophyte fungi
 Acremonium
 Alternaria species
 Aspergillus species
 Botryodiplodia theobromae
 Fusarium species
 Onycochola canadensis
 Pyrenochaeta unguis-hominis
 Scytalidium dimidiatum scopulariopsis species
 Scytalidium hyalimum
Yeast
 Candida albicans