How To Relax Sphincter Muscles During A Fissure | Steps

An anal fissure is a small tear at the anal opening. The pain can feel sharp during a bowel movement and keep aching after. A big part of that pain comes from a reflex: the internal anal sphincter tightens, blood flow drops, and the tear struggles to settle.

This article gives practical, low-risk moves that many people use to calm the spasm and make bowel movements less miserable. If you came here for how to relax sphincter muscles during a fissure, start with the first section and build a daily routine from there. You’ll also see the red flags that mean you should get medical care.

The tightening is not you “doing it wrong.” It’s a built-in reflex that tries to protect a sore spot. When the reflex stays switched on, the muscle can spasm for hours. That spasm can also reduce blood flow to the tear, which can slow healing. Breaking the cycle usually takes two tracks at the same time: calm the muscle now, then keep stool soft so the next bowel movement doesn’t restart the pain.

What To Do First When Spasm Hits

When the muscle clamps down, your goal is to stop the spiral: pain → tightening → more pain. Start with comfort and gentle release, not force.

Move	Why It Helps	When To Use It
Warm sitz bath (10–15 min)	Heat can ease spasm and soothe the area	After a bowel movement, and again later if sore
Slow belly breathing (2–3 min)	Turns down reflex clenching	Before the toilet, during pain spikes
Relaxed toilet posture	Reduces straining and “holding”	Any time you sit to pass stool
Water + fiber routine	Softer stools pass with less stretching	Daily, starting today
Short-term stool softener or laxative	Less friction and fewer hard stools	If constipation is part of the pattern
Gentle cleaning and barrier ointment	Less irritation means less guarding	After bowel movements, before sleep
Pain plan timed to bowel movements	Lower pain can reduce spasm	30–60 min before you expect to go
Skip “stretching” the tear	Avoids re-injury and rebound tightening	Always

How To Relax Sphincter Muscles During A Fissure

Think of sphincter relaxation as a set of tiny choices that add up. None of them should feel harsh. If a step spikes pain, back off and go gentler.

Use Warm Water The Right Way

A sitz bath is simply sitting in warm water that covers the hips and buttocks. Warmth can ease spasm and bring comfort. Many colorectal groups list sitz baths as a first-line step for fissure care.

Keep the water warm, not hot. Ten to fifteen minutes is plenty. Pat dry with a soft towel. Rubbing can sting.

Pair The Bath With A Simple Breathing Pattern

People often hold their breath when pain hits. That tightens the belly and pelvic floor as a unit. Try this instead:

1. Put one hand on your belly.
2. Breathe in through your nose for a slow count of four, letting the belly rise.
3. Breathe out for a slow count of six, letting the belly fall.
4. Repeat for ten breaths.

Longer exhales are the point. They cue the body to let go. Do a round before you sit on the toilet, then again after you’re done.

Change The Toilet Setup To Reduce Strain

Straining is gasoline on a fissure. If your feet dangle, the rectum angle can make pushing feel “needed.” A small footstool can help your knees sit higher than your hips. Keep your shoulders loose and your jaw unclenched.

Give yourself a time limit. If nothing happens in five minutes, stand up, sip water, walk around, and try again later. Sitting and pushing teaches the sphincter to clamp harder.

Let Stool Softness Do The Heavy Lifting

Soft stool is the closest thing to a pain dial you can turn at home. The National Institute of Diabetes and Digestive and Kidney Diseases notes that fluids help fiber work better and can make stools softer and easier to pass.

Aim for a steady rhythm: water through the day, fiber from food, and regular meals. Sudden huge fiber jumps can cause gas and pressure, so move up in small steps.

Food Moves That Often Help

• Choose oats, chia, berries, and beans for gentle bulk.
• Pick cooked vegetables if raw ones bloat you.
• Add a prune or kiwi habit if stools stay dry.
• Balance fiber with enough fluid so stool stays soft.

For a clear overview of fiber and fluids for constipation, see Eating, Diet, & Nutrition for Constipation (NIDDK).

Aim For A Soft, Formed Stool

The fissure tends to flare with two extremes: hard pellets that scrape, or frequent loose stools that sting. A soft, formed stool that passes in one go is the sweet spot. If you know the Bristol stool chart, think types 3–4. If you don’t, think “like a ripe banana,” not dry and not watery.

Aim for stool that hurts less.

Use Lubrication And Skin Protection

After a bowel movement, rinse with warm water or use a damp, alcohol-free wipe. Then pat dry. A thin layer of plain petroleum jelly or zinc oxide can reduce friction on the next pass. The goal is less sting, less guarding, less spasm.

Avoid scented soaps and harsh antiseptics on the area. Irritation can keep the muscle on edge.

Relaxing Sphincter Muscles During A Fissure With Better Timing

Small timing changes can cut pain. The trick is to lower spasm before stool arrives and to keep things calm after.

Try A “Before You Go” Routine

• Warm drink: tea or plain warm water.
• Two minutes of belly breathing.
• Five to ten minutes of walking.
• Then sit down once you feel the urge.

This is not about forcing a bowel movement. It’s about letting the urge come while the pelvic floor is already relaxed.

Keep Pain Control Practical

Some people use an over-the-counter pain reliever if they can take it safely. Others find a warm bath after the toilet does more. If you use topical numbing products, follow the label and keep use brief so the skin doesn’t get irritated.

What Not To Do When You’re Desperate

Fissure pain can make anyone reach for drastic fixes. A few common moves tend to backfire.

• Don’t push through with force. Hard straining keeps the tear irritated.
• Don’t “stretch” inside the anus. It can worsen the tear and trigger more spasm.
• Don’t skip meals to avoid pooping. It often leads to harder stools later.
• Don’t rely on stimulant laxatives every day. Use them only with medical guidance when needed.

When Home Steps Aren’t Enough

If symptoms keep looping, you may need targeted treatment that directly lowers sphincter tone. The American Society of Colon and Rectal Surgeons lists treatments like topical medicines that relax the sphincter, botulinum toxin injection, and surgery in persistent cases.

Read their patient overview here: Anal Fissure (FASCRS).

What Clinicians Often Try First

Many acute fissures settle with stool softening, warm baths, and time. When pain stays intense or healing stalls, prescription ointments may be used to relax the internal sphincter for a set period. These can cause side effects like headache, so they’re chosen case by case.

Approach	When It’s Used	Notes To Ask About
Fiber supplement (psyllium)	Hard stools, irregular stools	How to increase dose without gas
Osmotic laxative	Constipation that won’t budge	How long to use, hydration needs
Topical nitroglycerin	Ongoing pain, high sphincter tone	Headache risk, correct amount
Topical calcium-channel blocker	When nitroglycerin is not tolerated	Compounding, dosing schedule
Botulinum toxin injection	Fissure that stays tight and painful	How long effects last, repeat rates
Lateral internal sphincterotomy	Chronic fissure after other care	Healing rates, incontinence risk
Check for underlying causes	Atypical location, multiple tears	When testing is needed

Why Some Fissures Turn Chronic

Many tears heal in a couple of weeks once stool is soft and the muscle stops clamping. A fissure that lasts past six weeks is often called chronic. At that point, the edges can get thick, a small skin tag can form, and spasm becomes the default setting. That’s when prescription ointments or procedures may be offered, since they can lower sphincter tone more directly.

Red Flags That Mean Get Medical Care

Many fissures heal, yet some symptoms should be checked quickly.

• Heavy rectal bleeding or dizziness
• Fever, spreading redness, or pus
• New lump that grows fast
• Pain that keeps rising over days
• Symptoms lasting more than six weeks
• Fissures off the midline, or more than one tear

These signs can point to infection or another condition that needs different treatment.

A Simple Daily Plan To Keep The Muscle Loose

If you want one routine to follow, keep it boring and repeatable.

1. Morning: drink water, eat a fiber-rich breakfast, then take a short walk.
2. Before the toilet: do ten slow breaths and use a footstool.
3. After the toilet: warm rinse, pat dry, then a thin barrier layer.
4. Later in the day: a 10–15 minute warm bath if the area feels tight.
5. All day: keep stools soft with steady fluids and fiber.

If you’re searching for how to relax sphincter muscles during a fissure, this plan keeps the focus on two drivers: less pain and softer stool. Give it a fair trial for several days, track what changes your pain, and get medical care if you hit the red flags.