Toenail Fungus Treatment

You may have a nail fungal infection — also called onychomycosis (on-i-ko-mi-KO-sis) — if one or more of your nails are:

Thickened, Brittle, crumbly or ragged

Distorted in shape

Dull, with no luster or shine

A dark color, caused by debris building up under your nail

Infected nails may also separate from the nail bed, a condition called onycholysis.

You may even feel pain in your toes or fingertips and detect a slightly foul odor.