First Time User? Enroll now.
*Vaccine availability and appointments* | Visitor and mask policies | Additional COVID-19 resources.
Home > Health Library > Anal Fissure and Fistula
An anal fissure is a narrow tear that extends from the muscles that control the anus (sphincters) up into the anal canal. These tears usually develop when anal tissue is damaged during a hard bowel movement or when higher-than-normal tension develops in the anal sphincters.
An anal fistula is a tubelike passage (tract) from the anal canal to a hole in the skin near the anus. This may occur after rectal surgery, after an abscess in the rectal area, or as a complication of a bowel disease.
Current as of:
August 12, 2019
Author: Healthwise StaffMedical Review: Anne C. Poinier MD - Internal MedicineAdam Husney MD - Family MedicineC. Dale Mercer MD, FRCSC, FACS - General Surgery
Current as of: August 12, 2019
Author: Healthwise Staff
Medical Review:Anne C. Poinier MD - Internal Medicine & Adam Husney MD - Family Medicine & C. Dale Mercer MD, FRCSC, FACS - General Surgery
To learn more about Healthwise, visit Healthwise.org.
© 1995-2020 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.