Anal pain after bowel movement

Most patients with fissures have a history of constipation. Many diseases of the colon and rectum can be prevented or treated by seeking prompt medical care. Or your doctor may need to look for other underlying disorders that can cause anal fissures. Although not as common as other causes, sexually transmitted infections STIs can spread to the rectum from the genitals and cause pain. We are born with them. While most cases of anal pain are not cancer, tumors can cause bleeding, a mass, and changes in bowel habits, as well as pain that gets worse over time.