Why do old Chinese doctors have to look at tongue coating when they see a doctor? Is there any basis?

Chinese medicine believes that the tongue is a barometer of human health. No matter its shape or color, it reveals the symptoms of physical diseases. Tongue rash has also become a classic technique of Chinese medicine for thousands of years.

Speaking of basis, let's compare it.

A healthy person should have a soft tongue, red tongue, thin and uniform particles on the tongue surface, white fetus and moderate dryness and wetness. This is called: red tongue and thin white fur.

Tongue coating is too white and thick, which means that there is a thick layer of white tongue coating on the tongue, which can't be wiped off or scraped off, and a layer of greasy mucus is attached. ?

This is that there is too much phlegm in the body, the spleen and stomach are not good, and symptoms such as diarrhea and stomachache often appear, which are common in patients with pleural effusion, ascites, chronic nephritis, asthma, chronic bronchitis and bronchiectasis.

The tongue coating is yellow, the fetal color is yellow and sticky, and the particles are closely bonded.

The yellow and greasy tongue coating is the manifestation of damp heat, and the main symptoms are in the liver and spleen; If you are still thirsty, it means that your anger is strong, you are easy to be impatient and lose your temper; If bad breath occurs, it is caused by spleen-stomach imbalance, stomach fire and indigestion, and it can also lead to bitter taste, bad breath, decreased vision, dry eyes and other symptoms.

The blackening of the tongue coating is mainly caused by the proliferation and blackening of the filiform papillae of the tongue, with brown-black, gray-black, burnt-black, dark and other shades.

The blackening of the tongue is mainly caused by hot polarized fire, indicating that the body temperature is too high. Some patients with gastrointestinal diseases are prone to cold and dampness, and their tongue coating will become thick and greasy. At first, white gradually turned yellow or black. Some chronic diseases, such as uremia malignant tumor, will also appear black moss when the condition gets worse, which is a sign of critical illness. When the spirit is in a state of high tension, or when you often stay up late and smoke too much, it is also prone to black moss.

Tongue surface without coating, smooth as a mirror, without coating.

Mild symptoms may be due to malnutrition or lack of certain vitamins. Severe cases can be caused by insufficient body fluid, and the condition is serious, which is common in malignant anemia, persistent high fever, liver cirrhosis, pulmonary heart failure, chronic renal failure, uremia, toxic shock, brain coma and other diseases.

The tongue coating is blue, that is, the tongue is dark red, and the tongue coating peels off like beef.

A blue tongue is a special signal of blood stasis or slow blood flow in the body. When the human blood contains a lot of old waste, the body is short of water, or the blood circulation is not smooth due to some diseases, the purple color reaction of the tongue will appear.

Clinically, purple tongue coating is closely related to cancer and chronic diseases related to blood stasis (such as coronary heart disease, pulmonary heart disease, chronic liver disease, diabetes, vasculitis, lupus erythematosus, dysmenorrhea and amenorrhea).

There are thorns on the tongue coating, which means that there are many red thorns protruding from the tongue surface, like the fruit of grass mold.

Puncture holes appear on the tip of the tongue or the edge of the tongue, indicating that the heat is abundant, which can be seen in patients with various febrile infectious diseases or large-area burns;

Puncture in the tongue is mostly due to more toxic heat or heat entering the blood, which is easy to shock and coma;

People who suffer from insomnia, constipation or high pressure at night, as well as vitamin deficiency, malnutrition and cerebral cortex dysfunction, will also have red thorns on their tongues.