Neck pain when you turn your head is considered to be caused by physiological factors such as cold, pillow and other neck muscle spasms, and should also be considered to be caused by neurogenic cervical spondylosis, cervical and shoulder myofasciitis and other pathologic factors. 1. Physiological factors: if the neck is cold, pillow or long-term low head work, it will lead to local muscle spasm and neck pain, which is mainly manifested as pain on the side of the neck when turning the head. 2. Neurogenic cervical spondylosis: Neurogenic cervical spondylosis is caused by the compression of cervical nerve roots. With age, the cervical spine will gradually undergo degenerative diseases, which will lead to the compression of the nerve roots, resulting in pain and stiffness around the cervical vertebrae, and at the same time, accompanied by pain and numbness in one side of the upper limbs. 3. Cervical and shoulder myofasciitis: Cervical and shoulder myofasciitis is a sterile inflammation of the fascia of the cervical and shoulder muscles. Due to the stimulation of the inflammation, it will cause pain and discomfort in the neck, shoulder and back, and pain in the side of the neck when turning the head, which is usually aggravated after waking up in the morning, weather changes or getting cold. There may be other causes of neck pain when turning the head, it is recommended that the patient go to the hospital in time for examination, to clarify the cause of the disease to give standardized treatment.