I was happy to find this thread because I developed a rash on my abdomen 1 week post op. It started out as red, raised, and extremely itchy. It covered the entirety of my lower abdomen, around the incisions and the whole are between them. I took Benadryl 25mg twice and day and put hydrocortisone cream on it for a week. It's almost completely gone now and no longer itches. I showed it to my surgeon today and he said he wasn't worried about it. He didn't say what caused it, but it seems somewhat common from the research I did. Best of luck to any fellow itchy folks... hopefully it resolves like mine has!