I did have frozen shoulder, in fact my orthopedic doctor believes both have been frozen several years apart. The first my primary care had said I had a torn rotator cuff and it would heal in time. It did but it took a year or more. When the second one started there really was no possible injury and it slowly just froze up and got more and more painful. When I went for the recheck and asked for PT, my doctor said yes and also gave me a shot of cortisone which helped with the pain. It took more than a year, but eventually it did start to loosen. It is not pain free but it is certainly usable, and bearable. This is not something I would ever wish on another human being, but if it happens to you, seek out the best orthopedic doctor you can find.