Precise laser treatment for chronic anal fissures, minimal pain, rapid healing, and lower recurrence than conventional surgery.
Anal Fissure at a Glance
An anal fissure is a small tear in the lining of the anus. It causes sharp, burning pain during and after bowel movements, often described as passing glass, along with bright red bleeding on toilet paper. The pain can last for hours after each visit to the toilet, making daily life miserable.
Fissures are classified as acute (less than 6 weeks) or chronic (more than 6 weeks). Acute fissures often respond to simple measures: stool softeners, a high-fibre diet, adequate hydration and topical creams (nitroglycerin or diltiazem) that relax the internal anal sphincter and improve blood flow to the area. Chronic fissures, however, develop a cycle of spasm and poor healing that prevents them from closing on their own.
Laser-assisted sphincterotomy is the gold standard surgical treatment for chronic anal fissures. A controlled laser cuts a small portion of the internal anal sphincter muscle, relieving the spasm that prevents healing. The fissure then heals naturally, usually within 2 to 4 weeks. The laser approach causes less bleeding, less post-operative pain and faster healing than traditional scalpel surgery.
Book a consultation with Dr. Prashanth J V today.
Book Consultation 📞 +91 93533 16175The procedure takes 20 to 30 minutes under spinal or general anaesthesia. You go home the same day with minimal discomfort.
Spinal or general anaesthesia ensures you are completely pain-free. You are positioned comfortably and the anal area is cleaned and prepared.
The fissure, its extent and any associated features (sentinel pile, hypertrophied anal papilla) are carefully assessed. This confirms the correct surgical plan.
A fine laser probe divides a small, controlled portion of the internal anal sphincter. This relieves the muscular spasm that prevents the fissure from healing, without damaging continence.
The fissure edges are treated with laser energy to promote healing. Any sentinel skin tag or hypertrophied papilla is also addressed at the same time if needed.
After 2 to 3 hours of observation, you go home the same day. A simple dressing is applied. No external wound care is required beyond keeping the area clean.
Home the same day. Mild soreness around the anal area is normal. Take prescribed analgesics and stool softeners. Warm sitz baths provide significant relief.
Most patients return to desk work and light activity. Continue the high-fibre diet and stool softeners. Avoid straining at all costs. This is the single most important recovery instruction.
The fissure begins healing noticeably. Post-defecation pain reduces significantly. Continue sitz baths twice daily. Avoid heavy lifting and strenuous exercise.
Complete healing in most cases. A follow-up confirms full recovery. Maintain a high-fibre diet long term to prevent the fissure from recurring.
The distinction between an acute and a chronic fissure decides the treatment, so it is worth understanding.
| Feature | Acute fissure | Chronic fissure |
|---|---|---|
| Duration | Less than six to eight weeks | More than six to eight weeks |
| Appearance | A fresh, clean tear like a paper cut | Thickened, rolled edges with a visible base |
| Associated findings | None | A sentinel skin tag externally, and often a thickened anal papilla internally |
| Visible sphincter | No | Horizontal fibres of the internal sphincter are often visible in the base |
| Response to medical treatment | Usually heals | Less likely to heal on medicine alone |
Position matters. Around nine in ten fissures occur in the posterior midline, directly at the back of the anal canal. This is the area with the poorest blood supply, which is why tears there heal badly. Anterior midline fissures are less common and are seen more often in women, particularly after childbirth.
Atypical fissures can be the first sign of Crohn's disease, tuberculosis, a sexually transmitted infection or, rarely, a malignancy. In these cases the correct step is investigation and often a biopsy, not sphincter surgery.
A fissure begins with mechanical trauma to the anal lining and then persists because of muscle spasm. Understanding both halves explains why treatment aimed only at softening stool often fails once the fissure is established.
The commonest initiating event. A large firm stool tears the anoderm as it passes.
Repeated forceful straining stretches and splits the anal lining.
Some people naturally have a tighter internal sphincter, which reduces blood flow and predisposes to fissures.
Vaginal delivery can produce an anterior fissure through direct stretching and trauma.
Frequent loose stool irritates and inflames the anal canal and can cause tearing.
Produces hard, infrequent stool and repeated straining.
Including instrumentation, foreign bodies or anal intercourse.
Crohn's disease in particular can produce atypical, poorly healing fissures.
Once the cycle of pain, spasm and reduced blood supply is established, it becomes self-sustaining. People begin to fear opening their bowels, delay going, and the stool becomes harder still. Breaking that cycle is the whole basis of treatment.
Diagnosis is usually clinical and can be made without causing significant discomfort.
History. The pattern is characteristic. Sharp, tearing pain during defecation, often described as passing broken glass, followed by a deep aching or burning pain that persists for minutes to hours afterwards. There is usually a small amount of bright red blood on the paper rather than in the pan. Many people avoid opening the bowels because of the pain, which makes the underlying constipation worse.
Examination. Gently parting the buttocks usually reveals the fissure at the anal margin. A sentinel skin tag may be visible at its outer end in chronic cases. This simple inspection is often all that is needed.
What is deliberately avoided. A digital rectal examination and proctoscopy are painful in the presence of an acute fissure and are often postponed. Forcing an examination adds nothing to the diagnosis and understandably destroys a patient's confidence. Where a full examination is genuinely necessary, it can be performed under anaesthesia.
Further tests. These are not needed for a typical midline fissure. They become important where the fissure is atypical, where symptoms suggest inflammatory bowel disease, or where the fissure fails to heal despite correct treatment.
Medical treatment comes first for almost everyone. A procedure is considered when a chronic fissure has not healed after an adequate trial of stool softening, sitz baths and topical sphincter relaxants, usually six to eight weeks of consistent treatment.
| Usually suitable | Needs discussion first |
|---|---|
| A chronic fissure that has not healed on correct medical treatment | An acute fissure, where medical treatment should be tried properly first |
| Recurrent fissures after previous healing | Any pre-existing problem with bowel control, which changes the risk calculation significantly |
| A fissure with a sentinel tag and thickened edges | Previous anal surgery or obstetric injury to the sphincter |
| Severe pain limiting daily life despite treatment | An atypical fissure, which needs investigation and biopsy before any sphincter procedure |
| Demonstrably high resting sphincter tone | Inflammatory bowel disease, where sphincter division is generally avoided |
The reason for caution is specific. Procedures that reduce sphincter tone carry a small risk of affecting continence, and that risk is not acceptable in someone whose control is already marginal. Where it applies, sphincter preserving alternatives are used instead.
Preparation is minimal and most people continue normal activity until the day of treatment.
Fissure procedures are short and generally well tolerated, and the great majority of people are substantially better afterwards. The risks are still worth stating plainly, because one of them concerns bowel control.
| Effect | How often | What it means |
|---|---|---|
| Soreness for a few days | Common | Usually much less than the fissure pain itself, and eased by analgesia and sitz baths. |
| Minor bleeding | Common | Spotting for several days as the area heals. |
| Temporary difficulty controlling wind | Occasional | Reported after sphincter procedures and usually settles over weeks to months. |
| Delayed healing | Occasional | More likely where constipation continues or in smokers. |
| Urinary retention | Uncommon | Related to the anaesthetic. Usually temporary. |
| Recurrence of the fissure | Uncommon | More likely where the underlying constipation is not addressed. |
| Infection or small abscess | Uncommon | Managed with antibiotics, and drainage if a collection forms. |
| Persistent change in continence | Rare | A recognised risk of dividing sphincter muscle, and the reason the extent of any division is kept to the minimum necessary. |
Topical treatments carry their own minor risks, which are worth knowing. Glyceryl trinitrate ointment commonly causes headache, sometimes severe enough that people stop using it. Diltiazem ointment causes headache less often and is frequently preferred for that reason.
Treatment escalates in steps. Almost everyone starts at the top of this table, and most never need to move beyond it.
| Treatment | How it works | Setting | Typical use |
|---|---|---|---|
| Diet, fluids and stool softeners | Softens stool so the tear is not repeatedly reopened. The foundation of every treatment plan. | At home | All fissures, at every stage. |
| Sitz baths | Warm water relaxes the internal sphincter and relieves pain directly. | At home | Symptom relief alongside other measures. |
| Topical diltiazem or glyceryl trinitrate | Relaxes the internal sphincter chemically, restoring blood flow so the tear can heal. | At home | First-line medical treatment, used for six to eight weeks. |
| Botulinum toxin injection | Temporarily paralyses part of the internal sphincter, reducing tone for around three months. | Day care | Chronic fissures where ointment has failed, or where surgery is best avoided. |
| Laser sphincterotomy | Laser energy is used to reduce internal sphincter tone in a controlled, targeted manner. | Day care | Chronic fissures needing a procedure. |
| Lateral internal sphincterotomy | A small, precisely measured division of the internal sphincter. The long-established surgical standard. | Day care | Chronic fissures, where the highest healing rate is the priority. |
| Fissurectomy with tag excision | The chronic edges and sentinel tag are trimmed to convert a chronic wound into a fresh one. | Day care | Often combined with one of the above. |
Each step down the table increases the chance of healing and also increases the degree of intervention. The right level depends on how long the fissure has been present, how much it is affecting you, and your own continence risk.
An untreated fissure will not usually cause serious harm, but it can be genuinely miserable and it tends to entrench itself.
The cycle tightens. Pain leads to fear of opening the bowels, which leads to delay, harder stool and more tearing. Many people arrive having quietly reorganised their diet and daily routine around avoiding a bowel movement.
It becomes chronic. After six to eight weeks the fissure develops thickened edges, a sentinel tag and a fibrotic base. At that stage medical treatment alone is much less likely to work, and a procedure becomes more likely.
Secondary problems. Persistent constipation from stool withholding can contribute to piles. An untreated fissure can also become infected, and occasionally an abscess or fistula develops.
Quality of life. This is the reason most people finally seek help. Chronic anal pain affects sleep, work, exercise and mood, and it is entirely treatable.
Self-care is not an optional extra for fissures. It is the treatment, and it remains necessary after any procedure, because a fissure that heals will simply recur if hard stool continues.
Consistency matters more than intensity. A fissure treated properly for six weeks usually heals. The same fissure treated intermittently for six months often does not.
Controlled laser sphincterotomy delivers highly accurate treatment with minimal surrounding tissue involvement and very low risk of incontinence.
Extensive experience treating all types of anal fissures, acute, chronic and recurrent, with consistently high success rates.
No overnight hospital stay needed. Go home a few hours after the procedure and be back to your normal routine within days.
Medical References & Further Reading
This page is written and medically reviewed by Dr. Prashanth J V, MBBS, MS, FMAS, FISCP, DMAS, Karnataka Medical Council Registration No. 41048. It is general health information about anal fissure and does not replace an individual consultation, examination and investigation. If you have symptoms, please seek personalised medical advice.
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