I have RA and Hyper mobility syndrome have been ok lately but my shoulder has been niggling. Went to take my jumper off about an hour ago and omg have never felt pain like it. My shoulder just gave way on me felt like it snapped or dislocated. I was screaming it hurt that much. Have got ice on it and it starting to settle down although it aches right down my arm and fingers have swelled. My fingers swell a lot due to RA. Does anyone know what happened? I've had such a fright.