There are many reasons for body numbness, the most important are the following: First, nutritional deficiencies and metabolic disorders limb numbness, the patient may have a long-term gastrointestinal disorders, indigestion or a history of severe nutritional deficiencies onset. Second, toxic neuropathic numbness, patients can have a long history of exposure to heavy metals such as mercury, arsenic, lead or organic phosphorus or pesticides or some chemicals. Third, infectious neuropathic numbness, which is caused by the direct invasion of the nervous system by bacteria secreted neurotoxins or viruses and numbness of the limbs. These diseases are mainly diphtheria neuritis, leprosy neuritis. Fourth, acute polyneurogenic numbness. Patients first show fever, similar to the symptoms of upper respiratory tract infection, and 1-2 months later, numbness of the distal limbs appears, symmetrical. V. Spinal osteophytic numbness. It is quite common in the elderly, and its main cause is vertebral osteophytes, which compress the nerves in the spinal canal.