I sometimes get something similar during flare-ups. It's a mild burning sensation inside (and a little on the skin of) the right side of my lower abdomen, accompanied by a moderate burning sensation on the skin of the right side of my groin. Not too much in hip, though. I don't wear tight jeans.

I have CRPS type II from venipuncture injury to the sensory branch of the median nerve in my right arm. It spread first to the upper right quadrant of my body, then to the right leg, and is now on the entire right side of my body. The burning under the skin of the abdomen is fairly new, only in about the last 6 months.

Different every day.....