The five signs
- Cutting pain during the bowel movement. Patients describe it as broken glass or a razor. It is the single most telling symptom.
- Pain that continues. Unlike hemorrhoids, the pain of a fissure often lasts 20 minutes to several hours after the bathroom, because of sphincter spasm.
- Bright red blood. On the paper or streaked on the stool, usually a small amount.
- Visible tear. With a mirror, a small crack at the back (or front) of the anal opening; in chronic fissures a small skin tag at its outer end.
- Fear of the bathroom. Holding stool in makes it harder and re-tears the fissure: the vicious cycle.
Fissure, hemorrhoid, abscess or something else?
| Sign | Fissure | Hemorrhoids | Abscess / fistula |
|---|---|---|---|
| Pain | Sharp, during and after stool | Mild or none unless thrombosed | Constant, throbbing, worsening |
| Bleeding | Bright red, small, on paper | Bright red, can drip, painless | Pus or blood-stained discharge |
| Lump | Small skin tag if chronic | Soft lump, may prolapse | Hot, swollen, tender |
| Fever | No | No | Often |
Pain with itching that comes and goes may be pruritus ani; pain with ulcers or multiple tears needs testing for inflammatory bowel disease or infections.
Symptoms that need a visit without delay
Heavy or dark bleeding, fever, a swollen hot lump, pain that keeps worsening, a fissure off the midline, or any of these symptoms after age 50 without a previous colonoscopy.
Frequently asked questions
Why does the pain last hours after the bathroom?
Because the internal sphincter goes into spasm after the stool stretches the tear. The spasm itself hurts and reduces blood flow, which is why relaxing the muscle is the core of treatment.
Can a fissure cause itching?
Yes, especially as it heals or when discharge irritates the skin. Itching alone, without pain during stool, is more often pruritus ani or hemorrhoids.