A normal tongue is meant to be red in colour, so if your tongue has a different colour, then there obvious is a problem. The tongue is covered with papillae – small nodules on the tongue that give it a rough texture.

The most common cause of white tongue is dehydration. A dry mouth is a breeding ground for bacteria. Brushing your teeth and tongue less than twice a day increases your risk of developing white tongue. It can also be caused by an overgrowth of candida, which is a fungus that causes yeast infections or oral thrush.

Candida often lives inside the mouth. The problem arises when it accumulates. It can spread to the roof of the mouth, the gums, tongue, tonsils and the back of the throat. This creates white tongue, lesions, redness and even bleeding.

White tongue that cannot be scraped off and doesn’t go away after using antifungal treatments may be the result of a more serious condition. A white tongue accompanied by a sore throat may be symptoms of strep throat. White tongue can be caused by any of these factors:

Dehydration
Poor oral hygiene
Illness or infection
Dry mouth
Fever
Reaction to certain medications, such as antibiotics or steroids
Candida yeast infection (oral thrush)
Smoking or tobacco use
Alcohol use
Spicy food such as habanero and jalepeno peppers
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