The sudden onset of neck pain and impaired movement may be caused by a drop pillow. The cause of a drop pillow is due to sleeping at night with a pillow that is too high or too low, causing the muscles of the neck to be stretched for a long time, which leads to pain in the neck. Generally easy to occur in the side of the neck or the back of the neck, even the neck and shoulder will appear pain, pain is obvious when accompanied by impaired movement of the neck. The first thing is to rest, and then use the method of massage to relieve the neck pain. You can also use hot towels to apply hot compresses to the most obvious area of pain to promote local blood circulation, which can reduce the influence of inflammatory factors and inflammatory mediators, and you can also use the method of acupuncture in Chinese medicine to treat the pain.