Onychomycosis:Fungusinfection of the nail bed under the fingernails or toenails.Onychomycosismakes the nails look white and opaque, thickened, and brittle. It usually produces no symptoms other than a cosmetic problem. Treatment includes avoiding artificial nails, using safer application techniques and only new artificial nails, and using topical and oralantifungalmedications. Also known as nail fungus andtinea unguium.
