onychomycosis; tinea unguium; fungal nail infection
Medical term for a fungal infection of the nail, commonly called nail fungus.
Onychomycosis is a condition where the nail becomes cloudy and white.
Antifungal medication is used to treat onychomycosis.
Compound of 爪 (つめ, 'nail') + 白癬 (はくせん, 'tinea' or 'ringworm'). 白癬 itself is a medical term for dermatophyte infections.