You can actually have both IBS and a fissure. What you are describing though sounds more like a localized pain in your anus. This would indicate to me that you have either hemmhroids or fissures however I am not a doctor so I can't give you a dx. I would definitely talk to a doctor about
this because you can get medicines for hemmrhoids and with fissures, if left untreated can get infected.
Co-Moderator ~ IBS Forum
"Sometimes I'm afraid, and I don't feel that tough...But I'll stand back up" - Sugarland