There are several possible causes of shoulder pain: 1. Trauma. If the clavicle is hit by external force or violence, it may lead to a fracture at the clavicle, resulting in pain, protrusion and restricted movement at the clavicle. It is recommended to consult a hospital immediately and take an X-ray of the clavicle to see if there is a fracture. 2. Shoulder lock joint dislocation, trauma may also lead to shoulder lock joint dislocation, resulting in clavicle protrusion and shoulder pain. Immediately consult a hospital, take an x-ray and then give a bandage to protect the acromioclavicular joint after a manual reset. For treatment, you can give Siwei Pu for pain relief, Chinese herbal compresses, Chinese herbal fumigation and other physiotherapy techniques to relieve the symptoms. 3, frozen shoulder, if long-term strain or cold, may also lead to frozen shoulder, thus making the clavicle protrude shoulder pain, you can give Siwei Pu for pain relief, cefaclor capsules to reduce inflammation.