Numbness in the arms always occurs in life, and if it occurs from time to time, it should not be taken lightly, as it may be caused by a physical disease. There are many reasons for arm numbness, which can be caused by neurovascular pressure, brain disorders and other factors. 1, neurovascular pressure: sitting in the wrong posture, sitting for too long can cause the situation of numbness in the limbs. This is because the blood vessels in the arm in a bad posture under a lot of pressure, resulting in insufficient blood supply to the arm, waiting for the end of the pressure, blood circulation hand numbness symptoms will be relieved. 2, brain disorders: because the body’s various tissues and nerves are derived from the brain, so if the brain disease, such as cerebral palsy, stroke and other diseases, then the corresponding parts of it will appear numbness symptoms. 3, other disease factors: cervical spondylosis, diabetes, some peripheral nerve diseases, etc. will cause great damage or compression of the human blood vessels and nerves, which may cause the symptoms of numbness in the arms. Therefore, there are many causes of arm numbness, if arm numbness occurs frequently or lasts for a long time, do not blindly use drugs, you should go to the hospital as soon as possible to check the cause, so as not to delay the disease.