Onychomycosis is most commonly caused by ?
a) Trichophyton rubrum
Trichophyton mentagrophytes
Epidermatophyton floccosum
a) Candida
Ans. is 'a' i.e., Trichophyton rubrum Tinea Unguium (Onychomycosis) Tinea unguium is dermatophytic infection of fingers and toe nails. Most common causative species is T-rubrum. Toe nails are more commonly involved. T. Unguium may be of two types : ? Distal subungal onychomycosis : - This is most common type of fungal infection of nail (90%). It stas at the distal edge of the nail plate and slowly grows inwards to involve entire nail plate. Proximal Subungal onychomycosis : - Stas at the base of nail and slowly involves the entire nail plate.