DARRELL PERRY / SCIENCE PHOTO LIBRARY DARRELL PERRY / SCIENCE PHOTO LIBRARY
Close-up of the feet of a 50-year-old African-American man, comparing a normal big toenail (on right) with a toenail recovering from nail bed fungus (on left). Onychomycosis, also known as 'dermatophytic onychomycosis,' 'ringworm of the nail,' and 'tinea unguium,' is the most common disease of the nails and constitutes about a half of all nail abnormalities. The patient has had a three-month course of the oral drug Lamisil (Terbinafine hydrochloride) in the previous year.
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