Neck pain may be caused by pillow fall, chronic strain injury, cervical spondylosis, trauma, fasciitis, etc. If the symptoms persist, it is recommended to consult a doctor in time. 1. Falling pillow: poor sleeping posture, or choose the pillow is not suitable, it is easy to cause neck discomfort, stiffness, accompanied by neck pain and swelling, and restricted movement. 2. Chronic strain: If you work for a long time and have a poor neck posture, it is easy to cause chronic strain of the neck muscles, which may cause pain when stimulated by cold. 3. Cervical spondylosis: degenerative changes in the cervical intervertebral discs may lead to pain when they compress the surrounding soft tissues. 4. Trauma: the neck is hit by external impact, causing local muscle and ligament damage, which in turn shows redness, swelling and pain and other symptoms. 5. Fasciitis: long-term compression of the neck fascia is likely to cause local aseptic inflammation, which in turn produces localized pain. Neck pain is caused by a number of reasons, but also may be associated with local infection, osteophytes, osteoarthritis, tumors, muscle strain and other diseases, neck pain after rest did not relieve, it is recommended to promptly go to the hospital to identify the cause of the disease, under the guidance of the doctor targeted treatment.