An anal fissure feels like a sharp, tearing pain during a bowel movement, often described as passing broken glass. The pain doesn’t stop when the bowel movement ends. It can persist for minutes to several hours afterward, shifting from a sharp, cutting sensation to a deep burning or throbbing ache. Many people also notice a small amount of bright red blood on the toilet paper.
How the Pain Typically Unfolds
The sensation follows a fairly predictable pattern. As stool passes over the tear, you feel an intense, stinging or cutting pain right at the opening of the anus. People describe it as sharp, tearing, or like a paper cut in one of the most sensitive areas of the body. This initial spike of pain may ease briefly once the bowel movement is over, but for many people a second wave follows within minutes.
That second wave comes from the internal sphincter muscle going into spasm. The muscle beneath the tear contracts involuntarily, producing a deep, throbbing ache that can last anywhere from a few minutes to several hours. Some people find this lingering pain radiates outward to the buttocks, upper thighs, or lower back. The spasm also pulls the edges of the tear apart, which is why the fissure can feel just as painful the next day. It’s a cycle: the spasm prevents healing, and the unhealed wound triggers more spasm with the next bowel movement.
Between bowel movements, you may feel a persistent burning or itching sensation around the anus. Sitting for long periods, especially on hard surfaces, can make this worse. Some people develop a fear of going to the bathroom because they know what’s coming, which leads to stool-holding, harder stools, and an even more painful next pass.
What the Bleeding Looks Like
Most fissures produce a small amount of bright red blood. You’ll typically see it when you wipe or notice thin red streaks on the surface of your stool. The blood is bright red because the tear is right at the surface of the anal canal, so the blood hasn’t had time to darken. The volume is usually minor, nothing like the heavier bleeding some people experience with other conditions. If you’re seeing dark red, maroon, or black blood, that points to bleeding higher up in the digestive tract and is a different situation entirely.
How Fissures Feel Different From Hemorrhoids
This is the comparison most people are trying to make when they search for fissure symptoms. The key difference is pain. Most hemorrhoids don’t cause significant pain. They’re more likely to cause itching, a feeling of fullness or pressure, and you can often feel a soft lump near the anus. The discomfort from hemorrhoids tends to be mild and dull.
Fissures, by contrast, produce sharp, localized pain that’s clearly triggered by bowel movements and persists well after. If what you’re experiencing feels like a cut or tear rather than a dull ache or pressure, a fissure is the more likely cause. Both conditions can bleed, but fissure pain is typically much more intense. Another clue: hemorrhoids often produce a visible or palpable lump, while fissures usually don’t, though a small skin tag (called a sentinel pile) can develop at the edge of a chronic fissure and be mistaken for a hemorrhoid.
Acute vs. Chronic Fissures
An acute fissure is a fresh tear. It hurts intensely but has a good chance of healing on its own within a few weeks if you soften your stools and keep the area clean. The pain pattern tends to be straightforward: sharp during bowel movements, burning afterward, and relatively comfortable in between.
A fissure that hasn’t healed after about six to eight weeks is considered chronic. Chronic fissures often develop thickened edges and that small sentinel skin tag at the base of the tear. The pain pattern can shift. Some people with chronic fissures report that the baseline discomfort between bowel movements never fully disappears. The sphincter spasm becomes more established, which means the muscle stays tighter, the tear keeps reopening, and each bowel movement restarts the cycle. Chronic fissures are less likely to resolve without treatment because the spasm itself prevents healing.
What Makes the Pain Worse
The single biggest aggravator is hard or large stools. Constipation forces you to strain, which stretches the tear open and deepens it. But loose, frequent stools can also irritate a fissure because the acidic content passes over the wound repeatedly. The ideal is soft, formed stool that passes without straining.
Sitting for extended periods can keep pressure on the area and prolong the throbbing sensation after a bowel movement. Some people notice that physical activity involving the core or pelvic floor, like heavy lifting or certain exercises, increases discomfort. Spicy foods and caffeine don’t directly affect the fissure itself, but they can change stool consistency or frequency in ways that make your next bowel movement more painful.
Managing the Pain at Home
The most effective immediate relief comes from a warm sitz bath, which means sitting in a few inches of warm water for 10 to 15 minutes after a bowel movement. The warmth relaxes the sphincter muscle, which directly addresses the spasm that causes most of the lingering pain. Many people find this cuts the post-bowel-movement ache significantly.
Fiber supplements and increased water intake soften stools and reduce the trauma of each bowel movement. This is the single most important long-term strategy. Over-the-counter pain relievers can take the edge off, and some people find topical numbing creams helpful for the burning sensation between bowel movements. If a fissure hasn’t improved after several weeks of consistent home care, a doctor can prescribe a topical medication that relaxes the sphincter muscle chemically, breaking the spasm-and-tear cycle that keeps chronic fissures from closing.