Heavy tongue coating suggests that the patient has gastrointestinal food stagnation (indigestion of food and its accumulation in the stomach), phlegm-dampness or phlegm-heat.
In Chinese medicine theory, tongue coating is generated by the stomach qi, and the five viscera and six bowels are all endowed with qi in the stomach, so changes in the tongue coating can reflect the cold, heat, deficiency, and solidity of the internal organs, the nature of the disease and the depth of the disease.
Thick tongue suggests the following. In the process of disease development, if the tongue coating from thin to thick, indicating that the disease into the evil, the condition from light to heavy; tongue coating thick also suggests that the patient may have indigestion, gastrointestinal food accumulation, etc.; tongue coating white, thick, greasy, suggesting that phlegm dampness; tongue coating yellow, thick, greasy, tongue edge red, suggesting that there is phlegm heat.
It is recommended that patients with abnormal tongue coating consult a doctor in a timely manner, under the guidance of a physician to standardize the treatment, do not take medication without authorization, so as not to cause adverse reactions.