If the left shoulder crease hurts, there is a possibility of inflammation of the biceps long head tendon, which happens to be the anatomical location of the biceps long head tendon. Inflammation of the biceps long head tendon can lead to pressure pain in the inter-nodal sulcus of the shoulder. When the patient bends the elbow to perform a resistance test, this is accompanied by significant tenderness, and in severe cases, a striated substance may appear in the location of the inter-nodal sulcus. To address the inflammation of the long head tendon of the biceps muscle, it is important to minimize stress on the shoulder and keep it warm and out of the cold. In the early stage, you can consider oral non-steroidal anti-inflammatory drug treatment, such as ibuprofen, aminophenol dihydrocodeine tablets, you can also take local closure therapy, through the injection of glucocorticoid drugs, has a very good anti-inflammatory and analgesic effect. Usually must pay attention to reduce lifting and carrying heavy objects, reduce the force of this position.