First, it is caused by spleen deficiency and dampness, as shown below. You can see that the tongue coating is thick, but the water is white, and the tooth marks on both sides of the tongue are very obvious. This is a typical spleen deficiency and dampness, and this dampness is cold and dampness.
People with this kind of tongue coating are usually prone to drowsiness, fatigue, listlessness, unwillingness to eat, listlessness, bloating, irregular or thin stools, frequent defecation, and even many people go to the toilet as soon as they finish eating. It is more common in people who sweat easily, eat nothing and gain weight, or drink water and gain weight. Because of the characteristics of spleen deficiency and dampness, it either does not absorb or absorbs fat accumulation.
Is this serious? It should be said that it is not serious, but it is not easy to adjust. Many people may not be effective after conditioning for a long time. Because it has a lot to do with diet. Generally, people with this kind of tongue coating eat a lot of vegetables, but it is of little use, because the fiber content of vegetables is relatively high, and they are generally cold if they are hot or cold. And this type should eat more warm food appropriately. If you have a light diet, you can eat fish, eggs and milk properly. Besides, you can take some Chinese patent medicines, such as Jianpi Pill, Ling Wei Pill and Shen Ling Baizhu Granule, and you can also use moxa stick moxibustion in Sanyinjiao, Zusanli and Yinlingquan.
Second, the deficiency of both qi and yin is caused by excessive heart fire, as shown in the following figure. You can see that the whole tongue body is red and dry, and the tongue coating is less. The tip of the tongue is red, and even a little red dot can be seen, like a strawberry, belonging to the heart.
People with this tongue coating are prone to dry mouth, thirst, upset, insomnia, irritability, impatience and constipation. Generally, it is found in women with acute temperament, diabetes or menopause.
Is it serious? This is actually not serious. By invigorating qi, nourishing yin and reducing fire, the symptoms will gradually disappear and the cracks will disappear. For example, boiled water such as Radix Glehniae, Radix Ophiopogonis, Rhizoma Polygonati Odorati, Dendrobium, Radix Panacis Quinquefolii and Radix Rehmanniae can be used instead of tea. You can also eat some Shengmai granules, Yuquan capsules, Maiwei Dihuang pills, Yixinshu tablets and so on.
Third, the zang-fu organs are caused by excess heat or damp heat, as shown below. You can see that this tongue coating is a little thick, a little yellow, dry and cracked. Some people's tongue coating may be thicker or less Huang Gan. But as long as it is thick, dry and yellow, it is generally this syndrome.
People with this tongue coating are prone to heavy breath, bad breath, thirst, dry stool, dark or sticky stool, yellow urine, abdominal distension or big belly. It is more common in people with unhealthy diet, heavy taste, frequent drinking of liquor, or elderly people suffering from fluid deficiency.
Is this serious? Relatively speaking, it is heavier than fire due to yin deficiency, but it can recover quickly after diet conditioning. Usually, the diet is light, eat more fruits and vegetables, drink more water, exercise more, ensure smooth stool, drink less and stay up late less. You can drink more dandelion tea, buckwheat tea, cassia seed tea and mulberry leaf tea.
Fourth, the normal tongue coating has a cracked tongue, as shown below. The cracks in this picture are not obvious. Some of them, like the veins of trees, have a main crack and several small cracks extending. This may appear from time to time and disappear after a while. Or have this crack since childhood, and there are no other discomfort symptoms. If there are no symptoms, you can ignore them.
Some people have deep cracks, and many people feel pain when drinking water or eating, which may be caused by severe spleen deficiency and yin injury. Generally, the onset time is longer. While recuperating the spleen and stomach, nourishing yin and promoting fluid production, they usually take some multivitamins, and even need surgery in severe cases.
In short, it is normal to have cracks, even if there is a physical problem, it is not a big problem. Apart from the pain caused by deep fissure, there is nothing wrong with the cracked tongue itself, not to mention that some people worry that it is a so-called precursor of gastric cancer. If the body is caused by spleen deficiency, yin deficiency, damp heat, cold and dampness, etc., and these problems are solved, the cracks will naturally disappear. As for born this way, you can leave it alone.