I've had rsd for 10 yrs and have 3 tattoos. I am looking at getting my 4th one also. I may hurt after but I'm going to do it. If it hurts too much then I will have my heating pad with me and meds. I am determined not to let this hold me back. Its up to you if you want to get a tat. I can't tell you if its the right decision or not. I would suggest talking to your drs about it. You might have to do something different. Like take antibiotics, or lay in a position that won't set up a flare. Also tats hurt. Not as much as rsd definitely but they hurt. Think of a big shot right under your skin multiple times in the same are. I am not trying to discourage you but thats how it feels. I'm not a dr, just a sufferer like you. When I get mine done I will have to lay down with a pillow under my leg.