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Medical Definition of Tinea favosa
1. A disease of the scalp that may affect the glabrous skin and the nails and is recognised by the concave sulfur-yellow crusts that form around loose, wiry hairs. Atrophy ensues, leaving a smooth, glossy, thin, paper-white patch. This type of disease is rare in the united states and more frequently seen in the middle east, africa, southeastern europe, and other countries bordering the mediterranean sea. (arnold, odom, and james, andrew's diseases of the skin, 8th ed, p319) (12 Dec 1998)