Symptoms of palmar weakness and common causes of palmar weakness are as follows: first, finger activities feel unable to use force, clenching the fingers feel unable to hold things; second, finger activities are affected, and finger, flexion and extension function is reduced relative to normal, or can not be accomplished; third, palmar weakness because of cerebrovascular disease, local orthopedic diseases, such as carpal tunnel syndrome compression of nerves and muscles, or because of prolonged fatigue, resulting in the accumulation of inflammatory substances, lactic acid buildup, muscle stimulation after continued will also produce weakness. Third, weakness of the palm of the hand, because of cerebrovascular disease, local orthopedic diseases, such as carpal tunnel syndrome compression of the nerves and muscles, or because of prolonged fatigue, resulting in the accumulation of inflammatory substances, lactic acid buildup, muscle stimulation after the continuation of weakness, if the activities of the obvious limitations to check the cerebral blood vessels and the cervical vertebrae whether to produce compression, resulting in weakness, need to be examined clearly, the symptomatic treatment.