Anal Fissure vs. Hemorrhoid: How to Tell Them Apart
If bowel movements have become sharply painful, there’s a good chance the cause isn’t a hemorrhoid at all — it’s more likely to be an anal fissure. The two conditions get confused constantly, because they share a location, some symptoms, and even some causes. But they’re different tissue problems, they’re treated differently, and mistaking one for the other can mean weeks of using the wrong thing.
- Sharp, tearing pain during and after a bowel movement is the hallmark of a fissure. Hemorrhoids are more often associated with itching, a feeling of a lump, or painless bleeding.
- Both can cause bright red blood — this symptom alone doesn’t distinguish them.
- Fissures are treated with medication that relaxes the anal sphincter (topical nitroglycerin or calcium-channel blockers like nifedipine or diltiazem), not with the hemorrhoid creams most people reach for first.
- A fissure that hasn’t healed after a few weeks of appropriate treatment, or pain severe enough to affect daily life, is worth a doctor’s visit.
What each one actually is
A hemorrhoid is a swollen blood vessel — similar to a varicose vein — inside the anal canal (internal) or just under the skin around the anus (external). Internal hemorrhoids sit above a nerve-poor zone, which is why they’re often painless even when they bleed. External hemorrhoids sit in nerve-rich tissue and can be quite painful, especially if a clot forms inside one (a thrombosed hemorrhoid).
An anal fissure is a small tear in the lining of the anal canal — closer to a paper cut than a swollen vessel. It usually happens after passing a hard or large stool, and it tends to occur along the back midline of the anus, an area with relatively poor blood supply, which is part of why fissures can be slow to heal on their own.
How the pain differs
This is usually the clearest signal.
| Hemorrhoid | Anal fissure | |
|---|---|---|
| Pain during bowel movement | Often mild or absent (internal); can be present with external or thrombosed hemorrhoids | Sharp, tearing, or burning — often described as “like glass” |
| Pain after bowel movement | Usually settles quickly | Often continues for minutes to hours afterward |
| Itching | Common | Less typical |
| Bleeding | Bright red, often on toilet paper or in the bowl | Bright red, often streaked on the stool |
| A lump you can feel | Common with external hemorrhoids | Not typical, though a small skin tag can form near a chronic fissure |
| Pattern over time | Can be constant or flare with straining | Often cyclical — pain in “episodes” tied to bowel movements |
Some people have both at once — a fissure and hemorrhoids frequently share the same root cause (straining, constipation), so their presence together doesn’t rule either one out.
Why the treatment difference matters
Reaching for a hemorrhoid cream when the real problem is a fissure won’t do much, because the underlying issue is different: a fissure is kept open by spasm in the anal sphincter muscle, which reduces blood flow to the tear and slows healing. Hemorrhoid products don’t address that.
For an acute fissure (present less than a few weeks), first-line care overlaps with hemorrhoid self-care: more fiber and fluids to soften stool, sitz baths, and avoiding straining. Most acute fissures heal within a few weeks this way.
For a chronic fissure (present longer than about 6–8 weeks), the standard next step is medication that relaxes the sphincter, most often:
- Topical nitroglycerin (glyceryl trinitrate) — can cause headaches in some people, which sometimes limits its use.
- Topical calcium-channel blockers (nifedipine or diltiazem) — an alternative with a different side-effect profile; some studies suggest a higher healing rate than nitroglycerin, though results vary by study.
If topical treatment doesn’t resolve a chronic fissure, options include botulinum toxin (Botox) injection into the sphincter, or a minor surgical procedure (lateral internal sphincterotomy) for fissures that don’t respond to other measures. These require a doctor’s evaluation — they aren’t something to try to replicate at home, and a persistent fissure is also worth checking because a small number of non-healing anal sores turn out to be something other than a simple fissure.
When to see a doctor rather than keep self-treating
- Pain hasn’t improved after 2–3 weeks of home care (more fiber, fluids, sitz baths)
- The pain is severe enough to make you avoid bowel movements, which can create a cycle of harder stool and worse tearing
- You notice a sore that doesn’t look like a typical midline tear, or one that isn’t healing at all
- Any of the broader red-flag symptoms apply to you — see below
- Blood mixed into the stool, not just on the surface
- A change in the shape or frequency of your stools lasting more than a few weeks
- You’re 45 or older and haven’t had colorectal cancer screening
- A family history of colorectal cancer or polyps
- Unexplained weight loss, fatigue, or anemia
- Symptoms that haven’t improved after 2–3 weeks of home care
- Any first-ever episode of rectal bleeding
This article is for general education and isn’t a substitute for a physical exam. Fissures and hemorrhoids can look similar even to the person experiencing them — a doctor or nurse practitioner can usually tell the difference in a brief visual exam.