Dry tongue coating and cracks in the middle of the tongue suggest that the body’s fluid has been injured, which can be caused by kidney yin deficiency, but also cannot be ruled out by phlegm (a pathological product of impaired metabolism of water and fluid), blood stasis and internal obstruction caused by.
Kidney yin deficiency refers to a series of diseases caused by deficiency of kidney yin, loss of nourishment, and internal disturbance of deficiency fire. Due to the deficiency of yin and fluid, the tongue cannot be nourished, and the internal disturbance of deficiency fire burns the fluid, which aggravates the internal injury of fluid, and therefore leads to dryness of the tongue coating, and cracks in the middle of the tongue.
In addition, the internal obstruction of phlegm and blood stasis leads to the dysfunction of fluid transmission and distribution and the inability of water to support the tongue, which in turn leads to dry tongue coating and cracks in the middle of the tongue. Therefore, in addition to kidney yin deficiency, phlegm and blood stasis can also lead to dry tongue coating and cracks in the middle of the tongue.
It is recommended that people with kidney yin deficiency and dry tongue coating with cracks in the middle of the tongue should consult a professional doctor in time for diagnosis and treatment.