I get a stingy burny rash on my anus after walking around at work for a number of hours. it causes me to have to walk funny. it goes away with sudo?

Rectal pain: pain and rash in the perianal area requires evaluation by a physician. There are a number of possibilities including hemorrhoids, annals fissure, and fistula

Fecal soiling: Avoid any harsh scrubbing. Every few hours use any skin cream (Aveeno, etc.) on bathroom paper and clean the anal area including INSIDE the anus. Do it if you feel wet or itchy or irritated or have a wet fart. Do it after you clean after a bowel movement because you have a little fecal material leaking out, especially if sweating. The cream you have will help as well.