Right arm can’t lift shoulder pain may be caused by long time labor or overuse of the right arm, which is a normal phenomenon, or it may be caused by frozen shoulder, rotator cuff injury, cervical spondylosis and other pathological factors. 1. Physiological factors: If you use your right arm for a long time with high intensity, it may lead to muscle pain in the right arm, difficulty in lifting and shoulder pain. It can be gradually relieved after sufficient rest. 2. Frozen shoulder: also known as fifty shoulders, is a self-limiting aseptic inflammation, with shoulder joint pain and limited joint movement as the main clinical manifestations. 3. Rotator cuff injury: caused by trauma or repetitive exercise, manifested by shoulder joint pain, weakness and limited joint movement. 4. Cervical spondylosis: degenerative cervical spondylosis can cause cervical disc herniation, osteophytes, etc., which will lead to nerve root compression and pain in the innervated area, causing pain and numbness in the right arm, as well as limitation of the movement of the shoulder joint on the same side. Patients who experience shoulder pain in the right arm, if the symptoms continue to be unrelieved or aggravated, they should go to the hospital in time, and after the doctor clarifies the cause of the disease, targeted treatment will be given.