CRPS

[gcoe]

Have a look at some of these systematic reviews. I think there is a bit of evidence out there for graded motor imagery.

PEDro - Search Results

The trouble is patients are usually getting a package of medical/psychological and physical treatments so the research is not very developed in working out what works best.

[Barnett]

Complex regional pain syndrome (CRPS) is a chronic progressive disease characterized by severe pain, swelling and changes in the skin. CRPS most likely does not have a single cause but rather results from multiple causes that produce similar symptoms. Some theories suggest that pain receptors in the affected part of the body become responsive to catecholamines.