Many patients will find that their neck hurts when they tilt it back. The main reasons for this symptom are as follows: 1. Long-term sitting and standing with the head down has led to muscle spasm in the neck, shoulders and back. In the process of suddenly tilting the head, the spastic muscles contract excessively, which will induce very obvious pain. 2. In the process of sitting and standing with the head down, the physiological curvature of the cervical vertebrae has changed, such as the physiological curvature of the cervical vertebrae has straightened, or even produced a reverse arch. In this case, the nerves around the cervical spine will be stimulated during head tilting, causing pain. 3. The deep fascia of the neck and back of the shoulder has become aseptic and inflammatory in the process of sitting and standing. The patient’s head is tilted and the fascia in these areas is stretched, resulting in significant pain. 4. Such patients may have a complication of cervical spine osteophytes or disc herniation. This kind of lesion may irritate the nerve roots of the cervical spine, especially when the patient tilts his head, the irritation will be aggravated, and then induce obvious pain.