What causes a red tongue coating?
Disease description:
After rinsing my mouth following a meal, I noticed my tongue coating appeared red. What could be the cause of a red tongue coating?
Doctor's answer (1)
Dr. Zhang Liwen
A red tongue coating may result from consuming foods containing red pigments, such as red-fleshed dragon fruit or tomatoes, which can stain the tongue. It could also be caused by burning mouth syndrome. Additionally, atrophic glossitis—resulting from conditions such as anemia, folate deficiency, or Candida albicans infection—often leads to a red appearance of the tongue coating. Since there are various potential causes for a red tongue coating, it is advisable to seek timely medical evaluation to determine the underlying cause and receive appropriate treatment as directed by a healthcare professional.
