I. Anatomy Introduction The tongue is an important “muscular organ” in the human oral cavity. It plays an important role in human articulation, mastication and taste. It plays an important role in mastication, taste and so on. The tongue is divided into the first 2/3 of the tongue body and the last 1/3 of the tongue root, which has a “V” shaped groove called the boundary groove. The front of the tongue body is called the tip of the tongue. There is a mucosal fold in the middle of the tongue, which is called the tongue ligament. Its innervation, mainly by the lingual nerve innervates the sensation of the tongue, and the hypoglossal nerve is responsible for the movement of the tongue. Second, the causes of tongue numbness Tongue numbness is one of the common clinical disorders, and many patients visit the clinic for the reason of tongue numbness. It tends to be seen mostly in middle-aged and elderly people. Its cause is currently unknown, and there are various theories. 1, poor qi and blood or insufficient intracranial blood supply A large proportion of patients not only have numbness of the tongue, but also have a purple tongue, which indicates that there is blood stasis in the body as well as poor qi and blood supply. Under normal circumstances, the tongue is hail white and the tongue is light red. However, if the tongue is purple and numb due to blood stasis, it is possible that the blood flow is slow and the blood viscosity is increased. Therefore, when there is a numbness of the tongue, you should check the blood lipids, blood sugar, blood pressure and blood viscosity as soon as possible. 2, drug problems If you take a lot of certain drugs will also cause you to have numbness of the tongue, such as gentamicin, streptomycin, etc., these drugs will lead to numbness of the tongue and lips. 2, medical reasons Some patients, after the extraction of “wisdom teeth” operation, the tongue numbness; this situation, consider the extraction process, the lingual nerve is too close to the root of the “wisdom teeth”, and affected. The lingual nerve is a peripheral nerve of the trigeminal nerve, so if the trigeminal nerve or the mandibular nerve is affected, it may lead to numbness of the tongue. When the mandible is fractured, it may affect the inferior alveolar nerve and lingual nerve, resulting in numbness of the lower lip or tongue. How to do about numbness of the tongue 1.First of all, identify the cause, to treat the symptoms. 2, for the injury caused by the “tongue numbness”, in the fracture treatment at the same time, to carry out neurotrophic treatment, you can use “vitamin”, nutritional support treatment for the nerve, to promote its recovery as soon as possible. 3. For numbness caused by deficiency of qi and blood, treatment can be carried out to unblock blood vessels and activate blood circulation to remove blood stasis. 4. For secondary numbness caused by tumors, treatment should be directed at the cause.