Patients often feel soreness at the back of the neck for more reasons, commonly as follows: 1, cervical spondylosis: most of the population often look down at the cell phone or often ambulate work, reading or reading the computer, too much time will easily cause disc protrusion or spinal stenosis, resulting in discomfort such as stiffness, soreness or pain in the neck. Whether the patient also has a numbness or weakness of the arms or muscle atrophy, if there are similar clinical manifestations, it means that the neck discomfort is caused by cervical spondylosis. 2. Tension headache: The patient has persistent soreness and pain in the neck and shoulders due to long-term irregular and incorrect posture. Some patients may also have a combination of anxiety or depression, and tension headache will appear as a clinical manifestation dominated by a feeling of soreness or pain in the neck.