Understanding the fissure
What a fissure is, how it differs from hemorrhoids, and the symptoms that matter.
What is an anal fissure? A surgeon explains it with a drawing of the anal canal
An anal fissure is a tear in the thin skin of the anal canal, kept open by a spasm of the internal sphincter that reduces blood flow to the wound. Soft stools heal most new fissures; chronic ones need a sphincter-relaxing ointment and, if that fails, a procedure.
Acute or chronic anal fissure? What changes after 6 to 8 weeks
The 6 to 8 week line separates fissures that usually heal with simple care from those held open by a fixed sphincter spasm and scar tissue. Chronic fissures need a sphincter-relaxing ointment for 6 to 8 weeks first, then botulinum toxin or sphincterotomy if it fails.
Anal fissure symptoms: a 2-minute self-check
A fissure announces itself with cutting pain during the bowel movement, pain that lingers afterwards and a little bright red blood. This self-check helps you read your symptoms, spot the ones that point elsewhere and know when to see a doctor without delay.
Fissure or hemorrhoids? The pain rule that tells them apart
A fissure is a tear that hurts with every stool; hemorrhoids are swollen cushions that mostly bleed, itch or prolapse without pain. The pain rule, the type of bleeding and the kind of lump separate them, and the difference decides which treatment actually works.
Fissure, fistula or abscess? How to tell them apart
Fissure, abscess and fistula sit in the same place but are different problems: a tear, an infection and a tunnel. Pain pattern, discharge and fever tell them apart, and an abscess is the one that cannot wait.
Sentinel pile: what is the lump next to a chronic anal fissure?
A sentinel pile is the skin tag that grows at the outer edge of a chronic fissure; it marks the tear, it does not cause it. Treat the fissure first: the tag often shrinks once the tear heals, and if it is removed, it is usually during fissure surgery rather than on its own.
What causes an anal fissure? The tear, the spasm and the risk factors
A fissure starts with a mechanical tear, usually from constipation, diarrhea or childbirth, and stays open because a tight internal sphincter reduces blood flow to the wound. Fissures that are off the midline, multiple or do not heal need tests for Crohn’s disease, infections or tumors.
Why does an anal fissure hurt for hours after a bowel movement?
Fissure pain has two phases: a cutting pain as the stool passes and a burning, throbbing pain afterwards caused by spasm of the internal sphincter. Sitz baths and sphincter-relaxing ointments target the spasm; soft stools prevent the next episode.
Anal fissure bleeding: how much is normal and when should you worry?
A fissure bleeds a little, bright red, with pain, and stops within minutes; soft stools are what stop it. Blood mixed with the stool, dark blood, anemia, weight loss or new bleeding after 45 are not explained by a fissure and need a colonoscopy.
Why does an anal fissure itch, and how do you calm it?
Itching around a fissure usually comes from healing skin, moisture, a reaction to creams or wipes, or rubbing too hard. Water, patting dry, a zinc barrier and soft stools fix most of it; steroid creams only for a few days and never more than 7.
Anterior anal fissure in women: why it happens and what changes in treatment
Anterior fissures sit at the front of the anal canal and are linked to childbirth, weak perineal support and straining. They start with the usual treatment, but because some have low sphincter pressure or hidden obstetric injury, the sphincter is assessed before any operation.
Lateral or multiple anal fissures: when should you think of Crohn’s, HIV, syphilis, tuberculosis or cancer?
Common fissures sit in the back or front midline; a lateral, multiple, painless or non-healing fissure is atypical and may point to Crohn’s disease, HIV, syphilis, herpes, tuberculosis or anal cancer. The right next step is an examination with biopsy and targeted tests, not another cream.
Anal fissure and inflammatory bowel disease: how is a Crohn’s fissure different?
Fissures are common in Crohn’s disease and can look and behave differently from ordinary fissures; some progress to abscess or fistula if left unhealed. Management combines control of the bowel inflammation with local care, and any procedure is decided by a gastroenterology and surgical team.
Anal fissure in women and men: how do sex and age change the picture?
Fissures occur in both sexes, but women more often have front-midline fissures related to pregnancy and childbirth, sometimes with low sphincter pressure, which changes surgical decisions. Children usually need stool softening rather than ointments, and in older adults any bleeding needs a check for other causes.
This content is educational and does not replace a medical consultation. FISURIN is a magistral (compounded) formula prepared under prescription in an authorized pharmacy; availability and regulatory status vary by country. If you have bleeding that does not stop, fever, or pain that worsens, seek medical care without delay.