| Anal fissure | |
|---|---|
| Other names | Fissure in ano, rectal fissure |
 | |
| An anal fissure | |
| Specialty | Gastroenterology  |
An anal fissure is a break or tear in the skin of the anal canal. Anal fissures may be noticed by bright red anal bleeding on toilet paper and undergarments, or sometimes in the toilet. If acute they are painful after defecation,[1] but with chronic fissures, pain intensity often reduces and becomes cyclical.[2]
- ^ Gott, M. D.; Peter, H. (5 March 1998). "New Therapy Coming for Anal Fissures". The Fresno Bee. Fresno, CA: McClatchy Co. p. E2, "Life" section.
- ^ Nelson, Richard L. (12 November 2014). "Anal fissure (chronic)". BMJ Clinical Evidence. 2014: 0407. ISSN 1752-8526. PMC 4229958. PMID 25391392.