Arm weakness is mainly for the treatment of the cause: 1, excessive exercise, muscle glycogen was a lot of depleted, a short period of time can not be replenished, then the upper limb weakness will occur when re-activity. The treatment is to relieve the compression of the intervertebral disc, which causes pain and numbness in the upper limbs. The treatment is to relieve the compression of the intervertebral disc, drugs are generally nerve nutrition-based, can assist cervical traction, massage, acupuncture, etc., serious cases of muscle atrophy weakness, the need for surgery. 3, central nervous system lesions, such as amyotrophic lateral sclerosis, early mainly to the upper limb weakness as the main performance, there is no good treatment. 4, malnutrition, hypoglycemia, long-term anorexia dieting Causes malnutrition, energy deficiency, will appear weakness of the limbs.