THE MERCK MANUAL: The Merck Manual of Diagnosis and Therapymultimedia

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  • Onychomycosis
  • Onychomycosis

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    Onychomycosis

    Onychomycosis is fungal infection of the nail plate, nail bed, or both. Infection may be distal subungual, with nail thickening and yellowing and accumulation of keratin and debris underneath the nail (top); proximal subungual (not pictured); or white superficial, with spreading of chalky white scale beneath the nail surface (bottom).

    Images provided by Thomas Habif, MD.

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