When playing computer, the neck is overworked due to keeping a posture inactive for a long time.1. It leads to aseptic inflammation of soft tissues such as muscles, fascia and ligaments in the neck, and repeated inflammation can lead to soft tissue hyperplasia and adhesions. These pathological changes can stimulate or jam the nerves in the neck that govern the head, causing nerve damage and headaches. 2. Overstrain in the neck can lead to disorder or misalignment of the small joints of the cervical spine, and these misaligned small joints can also compress the nerves in the neck and cause headaches. 3. These pathological changes can also cause headaches. In short, playing with the computer makes the neck strain, which leads to cervical spondylosis over time, and headache is one of the most common symptoms of cervical spondylosis.