There is a crack in the middle of the tongue, sometimes severe, sometimes not severe. I haven't drunk too much water recently, and it hurts a little. It feels like a boil. I remember when I was a child. This kind of situation belongs to cracked tongue, and cracks with different sizes, depths and shapes appear on the tongue surface, which is called cracked tongue. Cleft tongue is mostly a syndrome of yin deficiency and heat excess.

The main diseases of cracked tongue:

(1) Excess heat injures yin, with crimson tongue and cracks;

(2) Blood deficiency is not moist, mostly pale and cracked tongue.

(3) Spleen deficiency and wet immersion, the tongue is pale, white, fat and tender, with teeth marks and cracks at the edge. Treatment should nourish yin essence, replenish qi and promote fluid production; Strengthening the spleen and infiltrating dampness; Nourishing yin and purging fire; Clearing heat and moistening dryness. In addition, tongue crack refers to the crack of tongue quality and also refers to the crack of tongue coating; Dialectically speaking, it should be distinguished from the dryness and wetness of the moss. If it is chapped due to dryness, it is exogenous disease, heat burning and body fluid injury, and severe dryness and heat. If there is liquid on the fur and it cracks, it is mostly caused by qi deficiency. Because there are many syndromes of cracked tongue, the patients with this kind of tongue picture are generally more complicated, so you can combine local Chinese medicine to apply drugs based on syndrome differentiation.