For half body pain, it can be seen in brain diseases, myogenic diseases, etc. The details are as follows: 1. Brain diseases: especially thalamus lesions, because the thalamus is the relay station of sensation, after the lesion, the patient can have contralateral hemiplegia, numbness, and in severe cases, ankylosis can be seen. 2. For half body pain, patients are advised to undergo head nuclear magnetic examination, which can see the thalamic lesions of occupation, hemorrhage, infarction, etc. 2, myogenic diseases: half body pain can be clinically seen in myogenic diseases, such as myositis, the patient’s muscle pain in the half of the body, which can be accompanied by muscle swelling in the side of the body, and enzyme examination can be carried out, such as creatine kinase or CK-MB and other examinations, and hormone therapy is needed when necessary. 3, lactate, lactate, lactate, lactate, lactate, lactate and lactate. 3, lactic acid accumulation: half of the body pain clinically can also be seen in the patient due to a long time of inactivity, suddenly strenuous exercise, can appear muscle pain, considering that it is due to the accumulation of lactic acid caused by the problem is not big.