Re: Lower Back Lump - Hot to touch
Is it right by the dimple on the butt, one on each side? It is most likely synovial fluid. They call them back mice. I have several of them that are inflammed and hurt like heck because of my SI joint. They show up on a CT scan and you can feel them. If they become too bothersome, you can have them drained. It is the bodies way of trying to protect a joint. At least mine are.
See if taking an anti-inflammatory makes the swelling go down. Also, ice helps.