Symptoms occur more frequently on the fingernails than the toenails ... unguium or onychomycosis, is an infection that can affect the nail plate, nail bed, and root of the nail.

A doctor has issued a serious warning to anyone who bites their nails after one woman contracted a ‘deadly infection’.

It typically affects toenails but can be seen in fingernails. It is a fungal infection in the nail bed from a group of fungi called dermatophytes. It causes the nail to become thick, yellowed ...