Hairy tongue (coated tongue)
DESCRIPTION: This is an ignoble name for a lesion. The dorsal surface of the tongue appears hairy and is discolored. The hairy texture is imparted by excessive kerantinization of the filiform papillae. The keratin may take on the color of extrinsic stains and display a variety of colors.
ETIOLOGY: It occurs more frequently among heavy smokers, those taking wide-spectrum antibiotics, those with xerostomia, and those with poor oral hygiene. The exact cause is unknown.
TREATMENT: Treatment consists of brushing the tongue with a soft bristle toothbrush or the use of a commercial tongue scraper. If there is an obvious cause, it should be eliminated. Oral lubricants may assist those with xerostomia.
PROGNOSIS: Good
DIFFERENTIAL DIAGNOSIS: Candidiasis.
