Conversation: The conversation between human and AI assistant.
[|Human|] I ve been having pain in my shoulder neck and arm for many months. I can only lift my arm halfway up! It feels like there is a big ball in my deltoid muscle and shoulder. I do have fibromyalgia very bad and I ve had trigger injections with no relief. What do you recommend I do?
[|AI|]  You might have a problem with the "rotator cuff", often a small tear at the attachment of this structure (which allows you to lift the limb). It is not unusual to feel pain on the outside of the arm, midway between shoulder and elbow. If you have pain lying on that shoulder at night, that would tend to support the diagnosis. Ultrasound can demonstrate such abnormalities, and is relatively inexpensive. Treatment depends upon what is diagnosed by ultrasound. In most people the (accurate) injection of cortisone can be all that is needed.