I know this is an old thread but I wanted to mention something here for any future viewers looking for any help with the issue. It's not a solution for the over all problem but will help with maintenance.
Get a bidet installed on your toilet. It helps so much with ease of clean up and prevents getting sore from having to wipe all the time. You can even use it between actually having to go, just to keep the area clean and fresher feeling. I have always had a lot of bowel issues and diarrhea and after finally getting a bidet, I wished I had known about it all my life. Back when I used to have menstrual cycle, it helped so much with clean up for that as well.