I found out today that the severe pain I've been experiencing in my upper arm is not, as I suspected, a result of too much use of the laptop trackpad, but is in fact frozen shoulder, which can take months, or even years, to heal! I've been prescribed anti-inflammatories and some exercises. Can't do the exercises because it hurts too much. Has anyone had this and got better? How long did it take, and did anything help? Thanks!