The tongue appears smooth because of loss of filiform and fungiform papillae. This condition occurs during a vitamin B deficiency, such as in pellagra, and certain disorders like pernicious anemia.
Causes
1. Anemia
- Folic Acid deficiency Anemia
- Vitamin B12 Deficiency Anemia
- Iron Deficiency Anemia
- Pyridoxine deficiency
- Riboflavin deficiency
- Niacin deficiency
4. Riley-Day Dysautonia Syndrome
Synonyms:
* bald tongue
* hunter glossitis
* Moeller glossitis