My left ankle is the initial RSD site and it is always swollen to some degree. Like you, when I am on it, it gets worse. Full weight bearing is the worst...so it helps a LOT that I use the walker because I'm not putting as much weight on it. Otherwise...the big things are the hot bath with epsom salts followed by ultrasound therapy and heat (either heating pads or having a space heater on near by while I sit with my foot up). These also help with the pain of course but I always make sure to do these when the swelling gets bad. Sometimes if something in particular is causing the swelling like weather changes or another trigger it just needs to run its course. I don't take any meds to help the swelling. None that I ever took really helped anyway.