A black discoloration of the tongue is hardly seen. It is not due to any diseases. It can develop at birth or during the course of life.
It is usually permanent. Though sometimes, a black discoloration may be seen on the tongue. It may arise owing to elongation of the papillae giving the tongue a hairy feeling. If too much food debris (more than normal) accumulates on the tongue surface then it may result in bacterial increase in the mouth. It may develop a yellow discoloration ultimately followed by brown and black discoloration.
Other causes of black tongue may be:
- Mouth breathing
- Tobacco use
- Poor dental hygiene
Remember, taking care of oral hygiene is very important. A good and fresh mouth is likely to keep your tongue in good health.