What's wrong with the yellow tongue?

1.

If the patient eats too much spicy, sweet and greasy food, it will lead to strong stomach fire. The combination of heat and moisture will produce damp heat, which will lead to bitter mouth and yellow tongue coating. 2. If the patient lives in humid places for a long time, the damp heat will invade the human body for too long, which will lead to bitter mouth and yellow tongue coating

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3

. The spleen qi

deficiency will lead to abnormal metabolism of food and water transportation in the spleen and stomach. The body fluid is moist and turbid, and damp heat will be endogenous in the liver and gallbladder, which will also lead to bitter mouth and yellow tongue coating.