An anal fissure is a small tear in the lining of the anus that can cause sharp pain and bleeding during bowel movements. Although anal fissures are common, their symptoms are sometimes mistaken for piles (haemorrhoids).
People with an anal fissure may experience intense pain while passing stool, followed by burning or discomfort that lasts for several minutes or even hours.
The good news is that many recent anal fissures improve with appropriate treatment and changes in bowel habits. However, persistent or recurring fissures may require medical attention.
In this article, we explain the symptoms, causes, treatment options, and healing time of anal fissures, along with when to consult a doctor.
What Is an Anal Fissure?
An anal fissure is a tear or split in the thin tissue lining the anal canal.
The anal canal is the final portion of the digestive tract through which stool passes.
When the tissue stretches excessively, particularly during the passage of hard or large stools, a tear may develop.
The American Society of Colon and Rectal Surgeons (ASCRS) explains that fissures can cause pain and bleeding, particularly during and after bowel movements.
Anal fissures are generally classified into two types:
Acute Anal Fissure
An acute fissure is a recent tear, generally present for less than six weeks.
Many acute fissures heal with appropriate conservative treatment, including stool-softening measures and warm-water baths.
Chronic Anal Fissure
A chronic fissure is generally one that has persisted for more than six weeks.
Chronic fissures may develop changes in the surrounding tissue and can be more difficult to heal without medical treatment.
They may require prescription medication or, in selected cases, a procedure.
Common Symptoms of Anal Fissure
The symptoms of an anal fissure can vary depending on the severity and duration of the tear.
1. Sharp Pain During Bowel Movements
One of the most characteristic symptoms is sharp, cutting, or tearing pain while passing stool.
Some patients describe the sensation as passing glass.
2. Burning or Pain After Passing Stool
Pain may continue after a bowel movement, sometimes lasting several hours.
This can occur because the anal sphincter muscle goes into spasm, contributing to discomfort and reduced blood flow to the affected area.
3. Bright-Red Blood During Stool
A fissure may cause a small amount of bright-red blood on toilet paper or on the surface of the stool.
However, rectal bleeding can have several causes.
Never assume that bleeding is caused by a fissure without appropriate medical evaluation.
Related reading: (Does Bleeding During Stool Always Mean Piles?)
4. Fear of Passing Stool
Because bowel movements can be painful, some people begin avoiding or delaying them.
This may worsen constipation, resulting in harder stools and further irritation.
5. A Small Skin Tag Near the Anus
Some chronic fissures are associated with a small skin tag near the affected area, sometimes called a sentinel tag.
Not every fissure develops this feature.
What Causes an Anal Fissure?
Anal fissures commonly develop when the anal lining is stretched or injured.
Several factors can contribute.
1. Constipation and Hard Stools
Passing hard or large stools is one of the most common triggers.
Excessive stretching of the anal canal can create a small tear.
Repeated constipation may also interfere with healing.
Related reading: (Can Constipation Cause Piles? Understanding the Connection)
2. Straining During Bowel Movements
Forceful straining can increase pressure around the anal canal and contribute to injury.
3. Frequent Diarrhoea
Repeated loose stools can irritate the anal region and may contribute to fissure development.
4. Childbirth
Anal fissures can sometimes develop during or after childbirth because of stretching and pressure affecting the anal region.
5. Increased Anal Sphincter Muscle Tension
Some people experience increased resting tension in the internal anal sphincter.
This can contribute to pain and reduced blood flow, making healing more difficult.
6. Underlying Medical Conditions
Less commonly, fissures may be associated with conditions such as Crohn’s disease or certain infections.
Fissures in unusual locations, multiple fissures, or those that do not heal as expected may require additional investigation.
Anal Fissure vs Piles: What Is the Difference?
Anal fissures and piles can both cause bleeding and discomfort, but they are different conditions.
| Feature | Anal Fissure | Piles (Haemorrhoids) |
|---|---|---|
| Main problem | Tear in the anal lining | Enlarged or symptomatic haemorrhoidal tissue |
| Typical pain | Sharp pain during or after stool | Internal piles are often painless; external thrombosed piles can be very painful |
| Bleeding | Usually bright-red blood | Often bright-red blood |
| Other symptoms | Burning, sphincter spasm | Itching, swelling, prolapse or lumps |
| Treatment | Stool management, topical medicines, selected procedures | Dietary changes, medicines, office procedures or surgery |
Symptoms overlap, so an examination may be needed to distinguish the conditions.
For more information about haemorrhoids, read (Internal vs External Piles: Symptoms, Differences & Treatment).
Can an Anal Fissure Heal on Its Own?
Yes. Some acute anal fissures heal with conservative care, particularly when constipation and repeated irritation are addressed.
Measures that may support healing include:
- Keeping stools soft
- Eating sufficient dietary fibre
- Drinking adequate fluids
- Avoiding excessive straining
- Taking warm sitz baths
- Following prescribed treatment when necessary
However, not every fissure heals without medical intervention.
Persistent symptoms should be evaluated rather than repeatedly treated at home without a diagnosis.
How Long Does an Anal Fissure Take to Heal?
Healing time depends on whether the fissure is acute or chronic, the underlying causes, and the treatment provided.
Acute Fissure Healing Time
Many acute fissures improve over several days and may heal within a few weeks with appropriate care.
Chronic Fissure Healing Time
Chronic fissures can take longer to heal and may require prescription medications or procedures.
Some patients experience repeated cycles of improvement and recurrence.
According to the Mayo Clinic’s anal fissure treatment guidance, acute fissures often heal within a few weeks with suitable measures, while chronic fissures may need additional treatment.
Anal Fissure Treatment Options
Treatment depends on the fissure’s duration, severity, symptoms, and underlying cause.
1. Dietary and Lifestyle Changes
Increasing dietary fibre and maintaining adequate hydration can help prevent hard stools and reduce straining.
Useful foods include:
- Whole-wheat roti
- Oats and dalia
- Fruits
- Green vegetables
- Dal and legumes
- Other fibre-rich foods
For dietary guidance, read (Foods to Avoid With Piles: What to Eat and What to Limit). Although written for piles, its advice on fibre and constipation may also be relevant to fissure management.
2. Warm Sitz Baths
Sitting in comfortably warm water for approximately 10–20 minutes, particularly after bowel movements, may help ease discomfort and relax the anal sphincter.
Avoid excessively hot water.
3. Stool Softeners and Fibre Supplements
A healthcare professional may recommend suitable stool-softening treatment or fibre supplements when dietary changes are insufficient.
4. Prescription Topical Medicines
For some fissures, doctors may prescribe medicines that relax the anal sphincter and support healing.
These can include topical calcium-channel blockers or nitroglycerin preparations.
Such medicines should be used under medical supervision because they may cause side effects.
5. Botulinum Toxin Injection
Botulinum toxin may be considered for selected chronic fissures.
It temporarily relaxes the anal sphincter and may help the fissure heal.
Treatment suitability depends on individual circumstances.
6. Surgery for Chronic Anal Fissure
When appropriate medical treatment fails, surgery may be considered.
One established surgical option is lateral internal sphincterotomy (LIS), which reduces sphincter tension and may promote healing.
However, surgery carries risks, including possible changes in continence, and is not appropriate for every patient.
Treatment decisions should follow a detailed assessment of the patient’s condition and risk factors.
The ASCRS patient information on anal fissures discusses medical and surgical treatment approaches.
How to Prevent Anal Fissures From Returning
Preventing recurrence often involves reducing constipation, straining, and repeated anal irritation.
Helpful habits include:
- Maintaining adequate fibre intake
- Drinking sufficient fluids
- Avoiding prolonged toilet sitting
- Responding to the urge to pass stool
- Staying physically active
- Seeking treatment for persistent constipation or diarrhoea
These measures can lower the likelihood of recurrence, although they cannot guarantee that a fissure will never return.
When Should You See a Doctor for an Anal Fissure?
Consider consulting a doctor if:
- You experience persistent pain during bowel movements
- There is bleeding from the rectum
- Symptoms continue despite appropriate home care
- The fissure repeatedly returns
- You notice swelling, discharge, or a painful lump
- You experience a persistent change in bowel habits
Seek urgent medical attention for heavy bleeding, fainting, severe worsening pain with fever, or other concerning symptoms.
Persistent or unusual fissures may require evaluation for underlying medical conditions.
Anal Fissure Consultation and Treatment at ProctoCare, Indore
At ProctoCare, Indore, Dr. Sunil Kuril, MS (General Surgery), provides consultation and treatment for anal fissures, piles, fistula, and other anorectal conditions.
An appropriate clinical examination helps determine whether symptoms are caused by an anal fissure, haemorrhoids, or another condition.
Treatment may include conservative measures, prescription medication, or a procedure when clinically indicated.
Not every anal fissure requires surgery.
For professional assessment of persistent anal pain or bleeding, consult Dr. Sunil Kuril at ProctoCare.
(Internal Link: Anal Fissure Treatment in Indore)
Frequently Asked Questions
1. Is an anal fissure the same as piles?
PilesNo. An anal fissure is a tear in the anal lining, while piles are enlarged or symptomatic haemorrhoidal tissue. Both may cause rectal bleeding, but their symptoms and treatments differ.
2. Can an anal fissure heal without surgery?
Yes. Many acute fissures heal with dietary changes, stool management, warm sitz baths, and appropriate medical treatment. Some chronic fissures may require additional interventions.
3. How long does an anal fissure take to heal?
Acute fissures may heal within a few weeks, while chronic fissures can take longer and may require prescription medication or procedures.
4. Can constipation cause an anal fissure?
Yes. Hard stools and repeated straining are common factors contributing to anal fissures.
5. Is bleeding during stool always caused by an anal fissure?
No. Rectal bleeding can result from piles, fissures, and other gastrointestinal conditions. Medical evaluation is important to determine the cause.
6. Is anal fissure surgery painful?
Surgical procedures are generally performed using appropriate anaesthesia. Postoperative discomfort and recovery vary depending on the procedure and the patient.
7. Can an anal fissure come back after treatment?
Yes. Recurrence is possible, particularly when constipation, repeated straining, or other contributing factors continue.
8. When is surgery required for an anal fissure?
Surgery may be considered for selected chronic fissures that do not respond adequately to appropriate medical treatment. The decision depends on examination findings, symptoms, and individual risks.
Conclusion
An anal fissure is a common cause of pain and bleeding during bowel movements. Although many acute fissures improve with conservative care, chronic or recurring fissures may need professional treatment.
Maintaining soft stools, avoiding excessive straining, and addressing constipation can support healing and help reduce recurrence.
However, persistent anal pain or rectal bleeding should not be ignored.
For evaluation and treatment of anal fissures in Indore, consult Dr. Sunil Kuril at ProctoCare.
Medical Disclaimer
This article is intended for general educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Consult a qualified healthcare professional for persistent symptoms, rectal bleeding, severe pain, or concerns about your health.