This isn't the first time that I've had this condition over the last few years, and he tells me that he is convinced that I have a condition called frozen shoulder. It's often found in diabetics, and he gave me a couple of websites to visit about the matter. I provide the links he gave me for folks here to check out...
http://www.wcb.ab.ca/providers/medref04.asp
http://health.nytimes.com/health/guides/disease/frozen-shoulder/overview.html
http://www.mayoclinic.com/health/frozen-shoulder/DS00416
My shoulder, at the moment, really hurts, but I've just taken a Naproxen, so that should help somewhat. In the meantime, welcome to my wonderful world of Diabetes... anyone want to trade? Thought not. :)