Canker sores are shallow, tiny ulcers that may appear on the underside of the tongue and in your mouth. According to some research it seems that stress may be a reason for their appearance. They are usually harmless, but they cause problems with chewing your food well.
Bumps:
If you have bumps on your tongue, this could be a sign of an allergic reaction or infection.
3. Color Changes:
Changes in your tongue color may be an indication of more or less serious problems.
White: White colored tongue is usually telling you that you are dehydrated and that debris is trapped inside your papillae. You can solve this condition by cleaning and brushing your tongue regularly. For those who smoke this problem is worse.
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