Anxiety, stress, and fissures: the cycle

At a glance

Fissures hurt. And when something hurts every time you go to the toilet, your brain learns to fear it. That fear is not irrational — it is your nervous system doing exactly what it is designed to do. But the fear itself becomes part of the problem.

People describe a cycle: pain causes anxiety, anxiety tightens the sphincter, a tight sphincter reduces blood flow and makes the next bowel movement harder, and that harder bowel movement causes more pain. This loop — sometimes called the anxiety-pain-spasm cycle — comes up in nearly every long-term fissure discussion.

This guide covers how that cycle works, the specific anxiety patterns people describe, and what they report helps break it.

The anxiety-pain-spasm loop

This is the cycle at the centre of many people’s fissure experience. Understanding it is the first step to interrupting it.

1. A bowel movement causes pain. The fissure tears or stretches. This hurts — sometimes intensely.
2. Your brain registers danger. Pain is a threat signal. Your nervous system responds by increasing alertness and muscle tension. This is automatic, not a choice.
3. The internal sphincter tightens. This is both a direct pain response and a stress response. The muscle contracts around the injured area.
4. Blood flow to the fissure decreases. A tighter muscle compresses the small blood vessels that supply the tear with oxygen and nutrients.
5. Healing slows. Without adequate blood flow, the tissue cannot repair itself effectively.
6. Anticipation builds before the next bowel movement. You know it will hurt. Your body braces.
7. That bracing tightens the sphincter further — before anything has even happened. The muscle is already in spasm when the stool arrives.
8. The next bowel movement is harder and more painful. And the cycle deepens.

People describe this as feeling trapped. The thing your body does to protect you — tensing up — is the thing that makes everything worse. That is not your fault. It is how the nervous system works.

BM anxiety and avoidance

“BM anxiety” — the fear of bowel movements — is one of the most commonly described aspects of living with a fissure. People use strong language for it: terrified, dreading, panicking.

What people describe

• Intense dread in the hours before a bowel movement, sometimes from the moment they wake up
• Delaying or suppressing the urge to go, hoping it will pass or be easier later
• Sitting on the toilet for a long time unable to relax enough to start
• Holding their breath and bracing during the bowel movement, which increases pressure and tightens the sphincter
• Relief followed quickly by dread — knowing the cycle will repeat tomorrow
• Scanning their body constantly for signals that a bowel movement is coming

Why avoidance makes things worse

When people delay bowel movements, stools spend more time in the colon, where water is absorbed from them. The stool becomes harder. A harder stool is more likely to re-tear the fissure. The pain is worse. The anxiety increases.

This is the cruel logic of the cycle: the thing that feels safest in the moment — avoiding — is the thing that makes the next time worse.

Fear of eating

This pattern comes up often enough that it deserves its own section. People describe reducing their food intake — sometimes severely — because they have connected eating with the eventual pain of a bowel movement.

What people describe

• Skipping meals or eating very small amounts
• Avoiding fibre because they associate larger stools with more pain
• Timing meals to try to control when bowel movements happen
• Losing weight unintentionally
• Feeling anxious at mealtimes

Why this backfires

Less food does not mean no bowel movements — it means harder, more irregular ones. Reducing fibre specifically works against stool softness. The body needs regular, adequate food and fibre to produce stools that pass easily.

People who describe breaking this pattern usually say the same thing: eating more (especially fibre and water) actually made things better, not worse. The first few days were frightening, but softer, more regular stools reduced pain significantly.

Pre-surgery anxiety

For people facing surgical options like LIS or fissurectomy, a different kind of anxiety emerges. This is not just about pain — it is about risk, permanence, and trust.

What people describe

• Fear of incontinence — the most commonly cited surgical worry
• Fear that surgery will not work and they will have been through it for nothing
• Difficulty trusting a surgeon they have only met once or twice
• Guilt about “not trying hard enough” with conservative care
• Reading worst-case outcomes online and spiralling
• Feeling pressured to decide quickly in a short appointment

These fears are understandable. Surgery on a sensitive area carries real considerations. But people also describe how prolonged avoidance of surgery — when it has been recommended — extends the period of pain and anxiety.

How chronic pain affects mental health

A fissure that lasts weeks or months is not just a wound. It becomes the background of daily life. People describe impacts that go well beyond the physical:

• Low mood and hopelessness. When treatments do not work as expected, people describe feeling like nothing will ever help. The phrase “losing hope” appears constantly in fissure discussions.
• Isolation. The condition is difficult to explain to others. People describe pulling away from friends, family, and social activities — partly because of pain, partly because of shame.
• Sleep disruption. Night-time spasm, anxiety about the next morning, and general restlessness are all commonly described.
• Difficulty concentrating. Chronic pain occupies mental bandwidth. People describe struggling at work or with daily tasks.
• Relationship strain. Pain, low mood, and reduced intimacy all affect relationships. Partners often do not fully understand the severity.
• Frustration with medical care. Short appointments, long waiting lists, and feeling dismissed by doctors who see fissures as “minor” — these are frequently described sources of additional distress.

None of this is unusual. Chronic pain — of any kind — affects mental health. A fissure is no exception, regardless of how small the physical wound may appear.

What people describe that helped

Breaking the anxiety-pain-spasm cycle usually means working on more than one part of the loop at once. Here is what people report helping, roughly grouped by approach.

Breathing and relaxation techniques

The most accessible starting point. Deep, slow breathing — especially long exhalations — activates the parasympathetic nervous system and helps the sphincter ease its grip.

• Before bowel movements: 5 to 10 minutes of slow breathing to reduce the pre-BM tension
• During bowel movements: breathing out slowly instead of holding the breath and bracing
• Throughout the day: general relaxation practice to lower baseline muscle tension

People describe this as simple but not easy. It takes practice — often one to two weeks of daily use before it starts to feel natural. See our sphincter relaxation guide for detailed techniques.

Therapy and psychological support

This is not about being told it is “all in your head.” It is about having professional support for a genuine psychological response to pain.

• CBT (cognitive behavioural therapy) is the most commonly mentioned approach. It helps identify and gradually challenge avoidance patterns, catastrophic thinking, and the fear-tension cycle.
• Pain-focused therapy — some therapists specialise in chronic pain management. They understand the feedback loop between pain and anxiety without minimising the physical condition.
• Simply having someone to talk to who takes the situation seriously. Several people describe therapy as the first time someone fully listened without dismissing, rushing, or being uncomfortable.

You do not need a referral to see a therapist in many cases, though your GP can help if you are unsure where to start.

Pelvic floor physiotherapy

For people whose sphincter spasm has become chronic or whose pelvic floor muscles are stuck in a tightened state, pelvic floor physiotherapy addresses the physical side of the tension directly.

• Biofeedback — sensors show you how tense your muscles actually are, which is often much tighter than you realise
• Manual therapy — a physiotherapist works directly on the tight muscles
• Targeted exercises — specific stretches and relaxation techniques for the pelvic floor
• Education — understanding the connection between stress, breathing, posture, and pelvic tension

Many people describe pelvic floor therapy as a turning point — the thing that finally addressed the spasm side of the cycle directly. See our pelvic floor guide for more.

Medication support

Some people find that short-term medication helps them break the cycle enough to start healing — both physically and emotionally.

• Prescribed anxiolytics or antidepressants — a doctor may suggest these if anxiety or low mood is significantly affecting daily life. This is a conversation to have with your GP.
• Prescribed muscle relaxants — some doctors prescribe these alongside topical treatments to help reduce overall tension.

We do not cover specific medications or dosages. Your doctor can discuss what might be appropriate for your situation.

Practical daily strategies people mention

• A consistent morning routine — warm drink, fibre, sitz bath, breathing. Predictability reduces anxiety.
• Not checking the toilet paper obsessively — some people describe this as a compulsive behaviour that increases anxiety
• Limiting time spent reading about worst-case outcomes — being informed helps, but hours of forum reading at 2am makes anxiety worse
• Gentle movement — walking in particular. Sitting still increases pelvic tension.
• Telling at least one person what they are going through. The isolation makes everything harder.
• Writing things down — journaling symptoms and patterns helps some people feel more in control and less at the mercy of the condition

When to seek mental health support alongside physical treatment

Physical treatment addresses the wound. But if the anxiety has taken on a life of its own, treating the fissure alone may not be enough to feel better. Consider seeking mental health support if:

• Anxiety about bowel movements is the first thing you think about when you wake up and the last thing before sleep
• You are avoiding eating or have lost significant weight
• You are withdrawing from activities, work, or relationships
• You feel hopeless — like nothing will ever improve
• Pain and worry are affecting your sleep most nights
• You find yourself unable to stop thinking about your symptoms

These are signs that the emotional side of the cycle needs attention too. This is not a failure. It is a recognition that chronic pain affects the whole person, and treating the whole person gives the best chance of recovery.

Your GP is a good starting point. You can also self-refer to talking therapies through the NHS (in England, via the NHS Talking Therapies service) or seek a private therapist with experience in chronic pain.

You are not alone in this

The language people use to describe fissure anxiety is intense — and it is real. Feeling terrified of something as basic as going to the toilet is isolating in a way that is hard to explain to someone who has not experienced it.

But this experience is remarkably common. Thousands of people describe exactly this cycle. And many of those same people also describe finding their way through it — through a combination of physical treatment, self-care, professional support, and time.

The cycle can be broken. It rarely breaks all at once. But it can be broken.