Rectal prolapse occurs when the rectum turns itself inside out and comes out treats constipation is often all that's needed to cure rectal prolapse in young children. Pain and discomfort felt deep within the lower abdomen; Blood and mucus .. Aboriginal Health Worker, Acupuncture, Adolescent Mental Health Services. Fissures result from stretching the anal mucosa beyond its normal capacity. Pain during and after a bowel movement; Visible tear or cut in the area; Bright red . Diarrhea is a very common problem in children younger than age five. Abdominal pain and/or bloating; Rectal pain; Nausea and/or vomiting; Weight loss.