Common causes of anal fissure include:
- Passing large or hard stools
- Constipation and straining during bowel movements
- Chronic diarrhea
- Inflammation of the anorectal area, caused by Crohn's disease or another inflammatory bowel disease
Less common causes of anal fissures include:
Dec. 04, 2012
- Anal cancer
- Feldman M, et al. Sleisenger & Fordtran's Gastrointestinal and Liver Disease: Pathophysiology, Diagnosis, Management. 9th ed. Philadelphia, Pa.: Saunders Elsevier; 2010. http://www.mdconsult.com/books/about.do?eid=4-u1.0-B978-1-4160-6189-2..X0001-7--TOP&isbn=978-1-4160-6189-2&about=true&uniqId=229935664-2192. Accessed Oct. 16, 2012.
- Goldman L, et al. Cecil Medicine. 24th ed. Philadelphia, Pa.: Saunders Elsevier; 2012. http://www.mdconsult.com/books/about.do?about=true&eid=4-u1.0-B978-1-4377-1604-7..C2009-0-42832-0--TOP&isbn=978-1-4377-1604-7&uniqId=327451096-2. Accessed Oct. 16, 2012.
- Anal fissure. U.S. National Library of Medicine. http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0002116/. Accessed Oct. 17, 2012.
- Anal fissure. American Society of Colon & Rectal Surgeons. http://www.fascrs.org/patients/conditions/anal_fissure. Accessed Oct. 17, 2010.
- Zaghiyan KN, et al. Anal fissure. Clinics in Colon and Rectal Surgery. 2011;24(1):22.
- Etzioni DA. Current management of anal fissure. Seminars in Colon & Rectal Surgery. 2011;22:2.