What is the cause of the white layer on the tongue

The white layer on the tongue is mainly considered to be related to dietary influence, candida infection and lichen planus.
1. Dietary influences: after drinking milk or taking white powdery medicines, some of them may remain on the tongue, resulting in a white layer on the tongue.
2. Candida infection: after infection with Candida, it can lead to the appearance of multiple white spots on the affected area, and with the development of the disease, the spots will gradually merge into a piece, which looks like a white layer.
3. Lichen planus: the cause of this disease is complex, and may be related to genetics, infections, mental factors, etc. Oral lichen planus can lead to the appearance of reticulate milky-white lines or pimples on the affected area, and if the condition is serious, it may look like the appearance of a white layer on the tongue.
It is recommended to consult a doctor to confirm the diagnosis and follow the doctor’s instructions for appropriate treatment.