Diseases

Fissure in Ano

A painful linear tear at the margin of the anus. It appears as a crack or slit in the mucous membrane of the anus and is very painful and difficult to heal.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A painful linear tear at the margin of the anus. It appears as a crack or slit in the mucous membrane of the anus and is very painful and difficult to heal.

MeSH Record

Classification

Broader headings

Related Concepts

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MeSH Record

Synonyms

6 entry terms
  • Anal Fissure
  • Fissure, Anal
  • Anal Ulcer
  • Anal Ulcers
  • Ulcer, Anal
  • Ulcers, Anal

MeSH Record

Aspects Covered

35 allowable subheadings

Indexed with the subheadings blood, cerebrospinal fluid, chemically induced, classification, complications, congenital, diagnosis, diagnostic imaging, diet therapy, drug therapy, economics, embryology, enzymology, epidemiology, ethnology, etiology, genetics, history, immunology, metabolism, microbiology, mortality, nursing, parasitology, pathology, physiopathology, prevention & control, psychology, radiotherapy, rehabilitation, surgery, therapy, urine, veterinary, virology.

MeSH Record

Indexing Annotation

do not confuse entry term ANAL FISSURE with ANAL FISTULA see RECTAL FISTULA

MeSH Hierarchy

Tree Number

MeSH Record

NLM Classification

WI 605

AMA Style

References

  1. National Library of Medicine. Fissure in Ano. Medical Subject Headings (MeSH). 2026. Unique ID D005401. http://id.nlm.nih.gov/mesh/2026/D005401
  2. Fissure in Ano. In: Wikipedia. https://en.wikipedia.org/wiki/Anal_fissure
  3. Fissure in Ano. In: Wikidata. https://www.wikidata.org/wiki/Q484797