Crohn’s disease can cause anal fistulas, which are tunnels that go from your anus to the surface of the skin around your anus. They usually begin as an infection in one of your anal glands and can ...

A vesicovaginal fistula is an irregular opening between your bladder and vagina. This causes urine to leak out of your vagina. Usually, urine should only exit your body through your urethra (tube at ...