3.Arthroscopy
If your doctor’s still not sure what’s going on, they may recommend this. They’ll make a small cut in your skin and send a narrow tube with a camera on it into your shoulder. Not only can an arthroscopy help find the problem, but in some cases, special tools can be used to correct it.
4.Bursitis
Small fluid-filled sacs called bursas cushion the connections between your bones. If you make the same motion with your shoulder too often — like throwing a baseball or lifting something over your head — these sacs can get inflamed. When you have bursitis, even simple things, like getting dressed or combing your hair, can really hurt.
