## Question
SUBJECT: Complex Regional Pain Syndrome (CRPS) or Regional Sympathetic Dystrophy (RSD)
MESSAGE: I have searched your pages and website for information on this medical condition but found nothing. I know there's not a lot of research on this but I'm pretty certain that my father had it in his legs and now I do to. Is there any evidence this condition is genetic or is it an "Unknown at this time"?  Thanks

## Expert Summary
What causes Complex regional pain syndrome?