It depend. If you inflammation of the rotator cuff the treatment by using anti-inflammatory medication could in form tablets or injection in the shoulder area. If you have tear of the cuff and the tear is complete you need surgery for that.
How do I tell whether a shoulder injury is bursitis or rotator cuff tear? Pain when lift arm up or sideways or bear weight. Treatment method same?
Get examined. "bursitis" of the shoulder and a rotator cuff tear can present w/ very similar symptoms (pain w/ motion of shoulder away from body, night pain, etc).However subacromial bursitis will generally improve w/ time, rot. Cuff tears usually not. A simple physical exam by an ors in most cases will be give u your answer. Occ. A diagnostic injection will be needed as well. A high quality MRI is definitive. Gl!
You usually can't. A simple exam of the shoulder should be able to give you the answer. If conservative therapies fail, an MRI would be helpful.