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Image Number 2518 (Coated tongue)


Diagnosis: Coated tongue

Site: Tongue

Sex: F

Age: 35


Description: Off-white crust.

Submitted by: Nameer Al-Sudany

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Differential Diagnosis


A middle-aged woman presented with an asymptomatic off-white to slightly yellowish creamy coat covered the dorsal surface of the tongue of two weeks duration. Her history was negative except for recently consumed oral metronidazole taken for GI problem. On stoppage of suspected culprit (Flagyl) the crust had disappeared within 7-10 days. On rechallenging with metronidazole the coat has appeared again. Smear and culture from the coat was negative for candida.  

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