Want to find out something about your health? Stick your tongue out and have a look in the mirror. A healthy tongue should be pink and covered with small nodules (papillae). Any deviation from your tongue’s normal appearance, or any pain, may be cause for concern.
If your tongue has a white thick layer, like the consistency of cottage cheese, then you have oral thrush. Visit a doctor for medication to cure this ailment. If instead you have white patches, especially if you use tobacco, you may have Leukoplakia. It can be a precursor to cancer, so get yourself to a doctor.
A red tongue can sometimes go together with a sore throat. You could have scarlet fever, which is a bacterial condition that occurs in some people who have strep throat, and develop a strawberry tongue.
Black and hairy looking
If you tongue looks like this, you have got a problem with bacteria. Brush your teeth and tongue more and throw out that pack of cigarettes. If you're a good brusher and still have this problem, then it could be a side effect of chemotherapy, diabetes or antibiotics.
You see dents that line up perfectly on the edges of your tongue when you stick it out. It indicates that there is not enough supply of nutrients.
Frequent canker sores
These show up when you have consumed spicy food or you are suffering from cold or flu and you’re over working your immune system.
If your tongue is purple and you haven’t eaten anything that is purple, means you could have problems with circulation due to trauma. There could be a problem with your nervous system.