Needle-like pain in the shoulder should be considered for several reasons, such as shoulder sprain, frozen shoulder, rotator cuff injury, etc., as follows: 1. Shoulder sprain: It may be an acute shoulder sprain, such as when doing sports with too much exercise, or when there is an external blow, there will be a sprain of the shoulder joint, especially when the deltoid muscle is injured, there will be a stabbing and tearing-like pain on the outside of the shoulder. 2. Frozen shoulder: It mostly occurs in The main characteristic is pain, and sometimes it is accompanied by limitation of the shoulder joint function, especially when the joint is stuck together. 3. Rotator cuff injury: Rotator cuff injury can also cause stabbing pain in the shoulder joint. The main manifestation is pain, accompanied by weakness and limitation of shoulder joint supination.