I've read on here where a few have had back pain with their IBS but don't know where these threads might be...I'm wondering b/c I've recently developed a new symptom (aside from the usuals) of back pain in my left upper back area. It is very high (where the kidneys would be) but I don't know of anything else it could be besides my IBS. Could anyone with "IBS back pain" please explain to me what they feel? Also, what relieves it? I use a heating pad for my LUQ abd pain & have tried this on my back with some relief. Any information is much appreciated.