My ex-husband suffered from Chron's disease. He got like that. I couldn't touch him at all because the pain was so intense. Turned out he had a abcess in his stomach, well kinda on his side, really. They ended up draining 300 cc's of fluid out of there. I don't know if it'll help, but I thought I would let you know. Hope he feels better soon..
Oh, I couldn't touch him at all, especially on his lower back. Regardless of where the abcess was.