Hi I've been experiencing pain in my right shoulder, arm, hand and neck for over a year now. My arm is very stiff and I can't get it behind my back. The pain is getting worse and worse and it is so hard to describe what it feels like, the doctors seem to be putting it down to severe Frozen shoulder although they say it is very rare at my age as I am only 18. Heat seems to be the only thing that helps me although I am going for a cortisone injection in my shoulder. Has this helped anyone and what else has helped?