Sleep issues plague a good percentage of people that have CRPS.

If the OTC sleeping pills aren't helping you, (they don't do much for me) I would consider asking your doctor for a mild "prescription" medication. I use Trazodone (Desyrel). It is pretty tame as far as meds as far as side effects go, (I had dry mouth for a while, but that waned over time) and it really helps me. It is widely prescribed for sleep. Trazodone is an oral anti-depressant, but many people take just one tablet an hour or so before bedtime. It may take a couple of weeks for it to work effectively.

With chronic pain, I have found it essential to get as much sleep as I can; we all know that it makes the next day soooooo much better on a pain scale.