Onychomycosis is most commonly caused by -
Trichophyton rubrum
Trichophyton mentagrophytes
Epidermatophyton floccosum
Candida
Ans. is 'a' i.e., Trichophyton rubrum Tinea Unguium (Onychomycosis)o Tinea unguium is dermatophvtic 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 offungal infection of nail (90%). It starts at the distal edge of the nail plate and slowly growrs inwards to involve entire nail plate.Proximal Subungal onychomycosis : - Starts at the base of nail and slowly involves the entire nail plate.
Dermatophytosis