I similarly was diagnosed with CPRS after surgery earlier this year. One of the first odd symptoms I noticed, and tried to ignore by blaming my medications, was twitching. I can't say they have increased in strength or pain but are annoying. But I also started on Gabapentin and now Lyrica within a short time after they started. My doctor indicated these meds help to calm the nerves that fire off these twitches. I'm not saying the doc has the answer, but it might be worth asking your doctor about. Good luck.