Why does fissure pain last so long after a bowel movement?

The pain pattern of a fissure is distinctive: sharp pain during the bowel movement, followed by a burning or throbbing that can last minutes to hours. This is caused by sphincter spasm — the muscle clamps down in response to the tear, reducing blood flow and causing sustained pain. This spasm is the main driver of post-bowel-movement pain.

What provides the fastest pain relief?

People consistently describe warm sitz baths as the most reliable fast-acting relief. The warm water relaxes the sphincter, increases blood flow, and interrupts the spasm cycle. Sitting in a warm bath immediately after a bowel movement can significantly reduce the duration of the pain episode.

Is it normal for fissure pain to make you cry?

Yes. Many people describe fissure pain as severe enough to bring them to tears. The combination of sharp tearing pain followed by sustained burning is genuinely intense. If your pain is this severe, it is worth discussing with your clinician — both for adequate pain management and to ensure the treatment plan is appropriate for the severity of your condition.

Can I take strong painkillers for fissure pain?

Paracetamol is generally the recommended baseline pain relief. Anti-inflammatory medications may also help. Opioid painkillers are generally avoided because they cause constipation, which makes the fissure worse. If your pain is not adequately managed with standard options, discuss this with your clinician — there may be topical or procedural options that can help.

Managing intense fissure pain

At a glance

Fissure pain can be extraordinary. People describe it as one of the worst pains they have experienced — sharp, burning, and relentless. This guide is for people in the thick of it, who need practical strategies for managing the pain right now.

Understanding the pain

The pattern

Fissure pain follows a characteristic cycle:

During the bowel movement — sharp, tearing pain as stool passes over the tear
Immediately after — a brief period of relief in some people, or immediate transition to burning
The spasm phase — the internal sphincter clamps down in response to the pain, causing deep, throbbing, burning discomfort
Gradual easing — the spasm eventually relaxes and the pain fades. This can take 30 minutes, an hour, or several hours

The spasm phase is typically the worst part. It is also the phase where intervention can make the biggest difference.

Why it is so intense

The anal canal has a rich nerve supply. The combination of a physical tear being repeatedly aggravated, plus sustained muscle spasm that reduces blood flow to the area, creates a pain experience that is disproportionate to the size of the wound. A fissure may be small, but the pain it generates is anything but.

Immediate pain management

Warm sitz bath

This is the single most effective immediate measure. People describe it as going from a pain level of eight or nine to a four or five within minutes.

Fill a basin or bathtub with comfortably warm water
Sit in it immediately after a bowel movement
Stay for 10 to 15 minutes
The warmth relaxes the sphincter and interrupts the spasm cycle

If you do not have a sitz bath set up, a warm shower directed at the area can help, though it is not as effective as soaking.

Breathing

Deliberate, slow breathing during and after bowel movements helps in two ways: it reduces the overall tension in the body, and it specifically helps relax the pelvic floor and sphincter.

Breathe in slowly through the nose
Breathe out slowly through the mouth, letting the belly expand and the pelvic floor relax
Focus on releasing tension with each exhale

Pain medication

Paracetamol — taken 30 to 60 minutes before an expected bowel movement can take the edge off
Anti-inflammatory medication (ibuprofen, if appropriate for you) — can help with the inflammation component
Topical anaesthetic — some over-the-counter products provide temporary numbing. These provide short-term relief but do not address the underlying problem
Prescribed topical treatments — GTN or diltiazem work by relaxing the sphincter muscle, which addresses the spasm that drives the pain

Positioning

After a bowel movement, lying on your side with knees slightly bent can be more comfortable than sitting. Some people find that walking gently helps — the movement can distract from the pain and may help the spasm resolve faster.

Reducing pain over time

The immediate measures above manage individual episodes. Reducing the overall intensity of fissure pain over time requires addressing the root causes:

Softer stools

Every hard stool re-traumatises the fissure. Soft stools dramatically reduce the tearing component of the pain. Fibre, water, and stool softeners are the foundation.

Breaking the spasm cycle

Prescribed topical treatments (GTN, diltiazem) work specifically on sphincter relaxation. If you are not on one of these and your pain is significant, discuss this with your GP or specialist.

Healing the fissure

As the fissure heals, the pain diminishes. This is the long-term goal. Everything else — sitz baths, medication, breathing — is about managing the pain while healing happens.

When pain signals a problem

Fissure pain is expected to gradually improve over weeks of consistent care. If:

Pain is getting worse rather than better
New symptoms develop alongside the pain
The pain is not responding to the measures above
You are unable to function because of the pain level

These are signals to revisit your treatment plan with your clinician. More aggressive treatment — botox injection, surgical options — may be appropriate.