Although cervical spondylosis is a relatively common disease, it is also a difficult disease and can bring the following hazards to patients: 1. Cervical spondylosis can cause head, neck, shoulder, back, arm pain, neck and neck stiffness and restricted movement. Neck and shoulder pain can be radiated to the head and occipital region and upper limbs, some are accompanied by dizziness, house rotation, heavy cases with nausea and vomiting, bedridden, a few can have vertigo, sudden collapse. Some have fever on one side of the face and sometimes abnormal sweating. There is a feeling of heaviness in the back of the shoulder, weakness in the upper limbs, numbness in the fingers, loss of sensation in the skin of the limbs, weakness in holding objects in the hand, and sometimes unconscious grip on the ground. 2. A few people have loss of control of bowels and urine, sexual dysfunction, and even tetraplegia. There are also symptoms such as difficulty in swallowing and pronunciation. If the disease is not cured for a long time, it will cause psychological damage and produce symptoms such as insomnia, irritability, anger, anxiety and depression. 3. When cervical spondylosis involves sympathetic nerves, dizziness, headache, blurred vision, swelling of the eyes, dryness, inability to open the eyes, tinnitus, ear blockage, loss of balance, tachycardia, panic, tight c feeling in the chest, some even have symptoms such as gastrointestinal distension.