Introduction

A coated or white tongueoccurs when the surface is colonised by bacteria or fungi, and dead cells become trapped between the small nodules on the tongue.A coated tongueisn't a disease and isn't usually a sign of anything serious. It's usually only temporary.You can trygently brushing it with a tongue scraper and drinking plenty of water to help it improve.However, sometimes a coated tongue can indicate an infection or more serious condition. You should see your GP for advice if: you're concerned about changes to the appearance of your tongue your tongue hurts (read about the causes of tongue pain) your coated tongue persists for longer than two weeks Youcan read on to learn moreabout the possible causes of a coated tongue, but don't use this to diagnose yourself with a condition always leave that to your GP. Note that in a minority of people, a coated tongue may never return to its normal colour or texture, even after treatment.