Left shoulder back a little sore these 2 days how to return a responsibility

Soreness in the left shoulder and back may be caused by local tissue cold, overwork, incorrect sleeping posture, etc., or may be caused by scapulohumeral periarthritis, chronic strain, degenerative changes of the spine, etc. Soreness in the left shoulder and back can be relieved by hot compresses, massage and other methods. If the symptoms cannot be relieved for a long time, you should go to the hospital for examination in time and receive corresponding treatment after a clear diagnosis.