<unk>  means fungal infection of the nails.  It represents up to 20% of all nail disorders.
This condition may affect toe- or fingernails, but toenail infections are particularly common. The most common type of<unk>  (80-90%), caused by dermatophytes, is technically known as tinea unguium (tinea of the nails). It can result in discoloration, thickening, chalkiness, or crumbling of the nails and is often treated by powerful oral medications which, rarely, can cause severe side effects including liver failure.
Onychomycosis
Linea negra
Tinea versicolor
Tinea faciei
Granulosis rubra nasi
Dermatophytosis
Granuloma faciale
Tinea manuum