The common causes of hand muscle atrophy symptoms are: traumatic factors, neurological factors, cervical spine disease and so on. 1. Traumatic factors: If the patient’s hand has been injured by external force, it may lead to muscle, ligament and nerve injury. When the muscles are damaged, local scarring, edema, bleeding, ecchymosis and other symptoms may occur, resulting in muscle atrophy of the hand. 2 Neurological factors: if the patient’s nerves are damaged, it can also affect the nutritional supply of the muscles, which then leads to muscle atrophy. In addition, some neuromuscular diseases can also lead to muscle atrophy. 3. Cervical spondylosis: If the patient has cervical spinal stenosis and other diseases, it may compress the nerves, and then cause the symptoms of hand muscle atrophy. When the symptoms of hand muscle atrophy appear, it is recommended that patients go to the hospital in time, according to the diagnosis results, under the guidance of the doctor’s diagnosis and treatment.