I am 4 years post j-pouch and I still occasionally get horrific itchiness. I have to find a bathroom stat just so I can relieve the itch. I generally associate it with what I eat (tomato soup and blueberry will cause it for sure). I also notice that when I am away on vacation and swimming lots it happens. All that being said, my pouch functions perfectly and I am very happy. Hope you find a solution fast.