A low back pain may be caused by aseptic inflammation of the myofascia of the neck and shoulders, or it may be caused by cervical spondylosis. 1. Neck and shoulder myofascial inflammation: There are abundant myofascial tissues attached to the neck and shoulder, and prolonged head-down work and cell phone reading may cause fatigue injury to the neck and shoulder myofascial tissues, which may lead to the emergence of aseptic inflammation. When the head is lowered, the myofascia of the neck and shoulder is stimulated by pulling, which can induce the symptoms of pulling pain in the back area. 2. Cervical spondylosis: Degenerative lesions of the cervical spine may lead to cervical spondylosis, which on the one hand may cause aseptic inflammation of the myofascia of the neck and shoulders; on the other hand, it may also cause the nerves innervating the back to be compressed. When the head is bowed, due to the pulling of the myofascia and the further compression of the nerve roots, the symptoms of back pain may also occur. There may be other reasons for the back pain when you bow your head, so it is recommended that you go to the hospital in time, complete the examination to clarify the cause of the disease, and then give targeted treatment or therapy under the guidance of the doctor.