Having a bowel movement with an anal fissure is painful, but the right preparation can make a significant difference. The key is softening your stool so it passes with minimal friction, relaxing the muscle around the tear, and using a few simple techniques before, during, and after you go. Most fissures heal within a few weeks when you break the cycle of re-tearing with each bowel movement.
Why It Hurts So Much
An anal fissure is a small tear in the lining of the anal canal. When stool passes over it, the exposed muscle underneath goes into spasm. That spasm is a protective reflex, the body’s attempt to prevent further stretching, but it backfires. The clenching pulls the edges of the tear apart, cuts off blood flow to the area, and makes healing nearly impossible. Then the next bowel movement re-tears the wound, and the cycle starts over.
About 40% of fissures become chronic because of this loop. Breaking it requires two things: making stool soft enough that it doesn’t re-injure the tear, and calming the spasm so blood can reach the wound and repair it.
Soften Your Stool Before Anything Else
This is the single most important step. Hard or bulky stool is what tears the fissure open again. Your goal is stool that’s soft, smooth, and passes easily without straining.
Aim for 25 to 30 grams of fiber per day from food. That means fruits, vegetables, whole grains, beans, and lentils at most meals. If your current intake is low, increase gradually over a week or two to avoid bloating. About a quarter of your daily fiber (6 to 8 grams) should come from soluble fiber, the kind found in oats, apples, beans, and flaxseed, which absorbs water and forms a gel-like consistency.
Drink at least eight 8-ounce glasses of water daily. Fiber without enough water can actually make stool harder and bulkier, which is the opposite of what you need. If you’re adding a fiber supplement, increase your water intake beyond the baseline.
An osmotic laxative can help in the short term while you’re building up dietary fiber. These work by drawing water into the bowel to keep stool soft. Bulk-forming supplements (like psyllium husk) are another option. Either way, the long-term fix is a high-fiber diet maintained even after the fissure heals to prevent recurrence.
Prepare Before You Sit Down
A numbing ointment applied to the anal area before a bowel movement can take the edge off. Lidocaine ointment is widely available over the counter. Clean the area first with warm water or a moist wipe, then massage a small amount into the anal opening for two to three minutes. You can apply it two to three times a day. Using a disposable glove keeps things clean and makes the process easier.
Timing matters too. If you feel the urge, go. Don’t delay, because waiting can allow stool to dry out and harden in the rectum. But also don’t force yourself to go when there’s no urge. The goal is to respond promptly to natural signals.
Positioning and Technique on the Toilet
How you sit affects the angle of your rectum. There’s a natural kink at the end of the rectum, roughly 90 degrees, that helps with continence but makes passing stool harder when you’re sitting upright on a standard toilet. Squatting opens that angle to about 140 degrees, making elimination easier.
You don’t need to squat on the toilet rim. Leaning forward while seated, with your hands near the floor, compresses your torso against your thighs and puts gentle pressure on the colon. This mimics some of the benefits of squatting. A footstool under your feet can help you lean forward more naturally, though the lean itself matters more than foot height.
Let gravity and your body’s reflexes do the work. Breathe slowly and avoid holding your breath. If you catch yourself bearing down hard, stop, take a breath, and let the stool move on its own. Straining increases pressure on the anal canal and can widen the tear. If nothing happens after a few minutes, it’s fine to get up and try again later. Don’t sit on the toilet for more than 10 minutes, as prolonged sitting increases pressure on the area.
What to Do Right After
A warm sitz bath immediately after a bowel movement is one of the most effective ways to ease the spasm and pain. Fill a bathtub or a plastic sitz basin (available at most pharmacies) with 3 to 4 inches of warm water, around 104°F (40°C). Soak for 15 to 20 minutes. The warmth relaxes the internal sphincter muscle, improves blood flow to the tear, and provides real relief.
Pat the area dry gently afterward rather than wiping. If you use toilet paper, moisten it first, or use fragrance-free baby wipes. Rough or dry wiping can irritate the fissure.
Building a Daily Routine
Consistency helps more than any single trick. A typical daily routine for healing a fissure looks something like this: eat fiber-rich meals throughout the day, drink water steadily, apply numbing ointment before a bowel movement, use a relaxed forward-leaning position on the toilet, avoid straining, and follow up with a sitz bath. Many people find that a warm drink in the morning (coffee, tea, or just warm water) stimulates the gastrocolic reflex, the natural urge to go after eating or drinking, which lets you time your bowel movement for when you’re home and can take your time.
Try to have one predictable bowel movement per day rather than multiple small ones. Each trip to the toilet is another opportunity for the fissure to be aggravated, so fewer, softer, more complete movements are easier on the healing tissue. If your stool is consistently soft and you’re not straining, most acute fissures heal within four to eight weeks.
What Makes Things Worse
A few common habits can stall healing. Sitting on the toilet scrolling your phone keeps pressure on the anal canal far longer than necessary. Eating a low-fiber diet with lots of processed food produces hard, dry stool. Ignoring the urge to go lets stool dehydrate in the colon. Wiping aggressively with dry paper irritates the tear. And straining, even briefly, spikes pressure right at the wound.
Diarrhea is also a problem, not just constipation. Frequent loose stools irritate the fissure chemically and mechanically. If you’re dealing with both a fissure and loose stools, fiber supplements can actually help by adding bulk and consistency in both directions.