Trapezius pain is most often caused by falling sleep, strain injuries, and frozen shoulder. The characteristics of trapezius pain caused by different causes can be slightly different. Such as strains caused by localized pain. 1. Falling pillow: sleeping in a poor posture, or pillow size is not appropriate and other reasons, can cause falling pillow, resulting in spasmodic pain and tension of the trapezius muscle, acute pain is severe, accompanied by neck pain and soreness, restricted movement and other symptoms. 2. Strain: there is a history of strenuous exercise or prolonged overuse of the back muscles of the hands, trapezius pain, muscle stiffness, mostly localized, limited to the trapezius muscle, shoulder joint activities trapezius local pain is intense, strain is also accompanied by more serious local swelling. 3. Frozen shoulder: Frozen shoulder patients with cold, shoulder pain, limited shoulder activities, pressure pain, muscle spasm as the main clinical manifestations, involving the trapezius muscle can appear trapezius muscle pain, soreness and numbness, limited activities and other manifestations. There are many causes of trapezius pain, trapezius pain, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor combined with the relevant examination to clarify the cause of the cause of treatment, so as to avoid delaying the condition.