The meridians in the shoulder and neck area may become blocked due to blood stagnation, cold condensation, phlegm and other factors, and once blocked, it may cause the following symptoms: 1. Pain in the shoulder and neck area. This pain is mainly dull and sore at the beginning, and is relatively limited, but with the prolongation of the disease, it may rapidly diffuse and even produce discharge-like pain, which is often referred to as radiating pain. 2. Local swelling. Swelling is mainly manifested by muscle spasm and fascial contracture. Muscle spasm is mainly manifested by hard cords that can be felt under the skin locally and painful when moving. Fascial contracture is mainly manifested by the tightening of the fascia in the shoulder and neck area, and can cause severe pain when the fascia is pulled during activities.3. Restriction of movement. In addition, the blockage of meridians causes muscle spasm and fascial contracture, resulting in stiffness of the shoulder and neck area.