How is there many cracks on the tongue?

Cleft tongue: cracks with different sizes, depths and shapes appear on the tongue surface, which is called cleft tongue. \x0d\\x0d\ Main diseases and related research: \x0d\\x0d\ Cleft tongue is mostly yin deficiency with excessive heat. \x0d\\x0d\ The main diseases of cracked tongue: \x0d\\x0d\( 1) excess heat damages the yin, and the tongue is mostly red and cracked; \x0d\\x0d\(2) blood deficiency is not moist, mostly pale and cracked tongue, \x0d\\x0d\(3) spleen deficiency is wet soaked, mostly pale and tender, with teeth marks and cracks at the edge. Treatment should be nourishing yin essence, benefiting qi \x0d\ promoting fluid production; Strengthening the spleen and infiltrating dampness; Nourishing yin and purging fire; Clearing heat and moistening dryness. \x0d\\x0d\ In addition, a cracked tongue means a crack on the tongue, which also means a crack on the tongue coating; Dialectically speaking, it should be distinguished from the dryness and wetness of fur. If \x0d\ is chapped due to dryness, it is an exogenous disease, with body fluid injury caused by heat and severe dryness and heat. If there is liquid on the fur and it is cracked, it is mostly caused by qi deficiency. \x0d\ x0d \ Modern research thinks that shallow fissure on the tongue is mainly due to atrophy of the mucous membrane of the tongue, which makes the longitudinal or transverse lines of the tongue surface, while deep fissure on the tongue is a more serious atrophic lesion of the tongue, which makes the epithelial layer of the tongue lose its normal structure, some nipples are flat and fused, some are atrophied and fractured to form cracks, and there is a phenomenon of thickening scar contraction under it. \x0d\\x0d\ 《 Guide to Tongue Diagnosis: A Textbook for Tongue Diagnosis 》 holds that normal people's tongues have no lines, and lines are blood failure, and the depth of lines reflects little blood failure. \x0d\\x0d\—— The supralingual fissure is caused by yin deficiency of the body, such as borneol stripes, mostly due to yin deficiency of the elderly; \x0d\\x0d\—— The tongue is crimson without coating or short with horizontal lines, indicating yin deficiency and fluid dryness; \ x0d \ \ x0d \-The tongue is broken like herringbone and Sichuan characters, belonging to the gastric juice with excessive internal force and heat. \ x0d \ \ x0d \-red tongue with herringbone lines, indicating that evil entered the heart for the first time, or misused cold medicine due to yin syndrome; \ x0d \ \ x0d \- the tongue is red and cracked, and thirst leads the drinker to disappear; \x0d\\x0d\—— The red and red fur is thick and cracked, which indicates excess heat of viscera; \x0d\\x0d\—— Red fissure without moss and spots indicates yin deficiency and excessive fire; \ x0d \ \ x0d \- The crimson tongue is chapped, which is caused by pathogenic heat entering the liver or serious injury of vaginal fluid; \ x0d \ \ x0d \-But the cause of rupture is not only deficiency of stomach yin, but also stagnation of phlegm and heat; \ x0d \ \ x0d \- If the tongue is crimson, the tip of the tongue is broken, and there is blood stain and pain, it is a large loss of vaginal fluid and a burning heart; \ x0d \ \ x0d \- yellow-tongued tiger-tattooed man. Tonifying both qi and blood; \ x0d \ \ x0d \- The tongue is ruddy with black stripes, which is Yang Jue's cold syndrome; \ x0d \ \ x0d \-those who see herringbone lines on the lower back are kidney qi; \ x0d \ \ x0d \- those with lines on the stomach are mostly due to insufficient stomach qi; \x0d\\x0d\—— The tongue is pale and white, covered with hairlines, which is the syndrome of spleen deficiency and dampness, and the red tongue has several black lines, and the fur is slippery, which is the syndrome of water riding fire. \ x0d \ \ x0d \-the tongue is blue, which means that the stomach qi of typhoid fever is decreased, and miscellaneous diseases are cold and stagnant in uterus; \ x0d \ \ x0d \- Bleeding from laceration, burning bleeding on the tip of the tongue, which is caused by pathogenic heat and plastic heart meridian. \ x0d \ \ x0d \-Cleft tongue syndrome is rare in clinical diseases because of its high incidence. Please refer to each certificate for details. \ x0d \ x0d \ Patients with this tongue picture are generally complicated, so the treatment should be based on syndrome differentiation.