The symptom of a burst of numbness in the left shoulder is mostly seen in cold, improper activities, cervical disc herniation, frozen shoulder and other conditions. You should go to the hospital in time to determine the cause of the disease, and then follow the doctor’s instructions to take hot compresses, massage, acupuncture, physiotherapy and the application of drugs and other methods of treatment. 1, cold: if you stay in a cold environment for a long time, resulting in the left side of the shoulder is cold, may affect the local blood circulation, the left side of the shoulder a bout of numbness or chills, and other symptoms. You can use a hot towel to apply local warm compresses, and pay attention to keep warm; 2, inappropriate activities: inappropriate activities, overly strenuous or prolonged exercise resulting in local fatigue, there may be pain, left shoulder numbness in a burst of symptoms. Should reduce activities, more rest, can be through the massage method to relieve the numbness, pain and other symptoms; 3, cervical disc herniation: neck strain or prolonged head-down activities and other reasons lead to cervical disc herniation patients, nerve root compression or nerve root edema, there may be a burst of numbness of the left shoulder, as well as numbness of the hands, weakness and other symptoms. More neck activities should be done, and the patient can take cervical capsule for treatment as prescribed by the doctor, or traction, acupuncture, physiotherapy and other treatments; 4, frozen shoulder: exertion, inflammation stimulation and other reasons lead to frozen shoulder patients, there may be pain in the shoulder joints, difficulty in lifting the upper limbs, joint stiffness and other symptoms, and inflammation of the nerves may lead to numbness of the left shoulder after a burst of numbness. Closure treatment can be carried out, and shoulder joint functional exercise can also be carried out through climbing wall method, drawing circle method, combing method and other methods. If there are frequent numbness symptoms, you can follow the doctor’s instructions to take vitamin B1, vitamin B12 and other nutritious nerve drugs.