I am a bit confused by your situation - I had terrible rashes after my RNY and also after another surgery at 9 months that was exploratory for pain and ended up being caused by tons of adhesions and twisted intestines. But my point is both were laproscopic and I had an allergic reaction to my steristrips. It started out and it was itching and I used my atarax which is like benedryl but stronger that I use to help me sleep but it wasnt working. I got some cornstarch to see if it would relieve it at all but nothing. Then the rash got redder and perfect circles around every steri strip - all 5. So, I went to my allergist to see what was going on and he said that not only did I have an allergic reaction to the steri strips but it was also a slight infection - hence the perfect red circles at each site. So, he had me put on antibiotic ointment first and then 30 minutes later, I had to put on steroidal cream and take my atarax 2 times per day. Within 3 days it was much better. I had to do that for 7 days though.
Alot of us are allergic to the steri strips but yours doesnt' sound like that - you hav
e a rash in a totally different area. Yours sound more like medication, Besides the pain meds, did you take any antibiotics in the hospital or come home on one? When I was on penecillin back in 1984, I took it for 7 days with no problem and then on the 8th day, I had a rash all over my body - like welts from the bottom of my feet, between my toes, up my legs, on my stomach and back, arms and neck - it only missed my face. I didnt know what to do with myself - I was itching so bad, I thought I was going to rip my skin off, I had to walk around in gloves. they put me on steroids and even gave me a steroid shot. So, sometime allergic reactions can happen a few days later - so even though you stopped the pain medications a few days ago -it might still be from that
I would get to your PCP or an allergist if possible - maybe even a dermatologist if you can't get to an allergist - you need proper treatment for the allergic reaction - when they are delayed, they are tougher to treat. In the meantime get some benedryl capsules - take 2 for a total of 50mg and also get some benedryl cream and rub it all over. good luck.