Anal fissure is a small tear in the lining of the anus that can cause sharp pain, burning, and bleeding during or after bowel movements. Acute fissures may heal with appropriate medicines, dietary changes, and measures to prevent constipation. However, some fissures become chronic or keep recurring despite treatment.
Doctors may prescribe pain-relieving medicines, stool softeners, and topical ointments to reduce discomfort and support healing. But are these medicines enough, or might a procedure be necessary? The answer depends on the duration of the fissure, its severity, and how it responds to treatment.
Table of Contents
Commonly Prescribed Medicines for Anal Fissure
1. Painkillers
- Purpose: To provide temporary relief from pain and discomfort during bowel movements.
- Examples: Paracetamol and, when appropriate, certain anti-inflammatory medicines such as ibuprofen.
- How they work: Painkillers reduce pain, while anti-inflammatory medicines can also reduce inflammation.
- Limitations: They do not directly heal the fissure or address the underlying muscle spasm. Some anti-inflammatory medicines may increase bleeding risk or cause stomach irritation and may not be suitable for everyone.
2. Laxatives and Stool Softeners
- Purpose: To prevent hard stools and reduce straining during bowel movements.
- Examples: Lactulose, polyethylene glycol (PEG), and ispaghula husk (psyllium).
- How they work: Depending on the type, these medicines increase stool water content or add bulk, making bowel movements easier to pass.
- Limitations: They help create conditions for healing but may not be sufficient on their own for a chronic fissure.
Increase dietary fibre gradually and drink adequate fluids. A doctor or pharmacist can help select an appropriate laxative based on your symptoms and medical history.
3. Topical Ointments and Creams
- Purpose: To reduce anal sphincter tightness, improve local blood flow, or provide temporary pain relief.
- Common options include:
- Nitroglycerin ointment: Relaxes the internal anal sphincter and may help improve blood flow to the fissure. Headaches and dizziness are possible side effects.
- Diltiazem or nifedipine cream: These calcium-channel blockers help relax the anal sphincter and are commonly used as topical treatments for fissures.
- Lidocaine gel: Provides temporary local pain relief but does not directly heal the fissure.
- How they work: Medicines that relax the internal anal sphincter reduce muscle spasm and may improve blood supply to the affected area, supporting healing.
- Limitations: They need to be used as prescribed. Some fissures may not heal with topical treatment, and recurrence can occur.
4. Antibiotics in Specific Cases
- Purpose: To treat a separately diagnosed bacterial infection when present.
- Examples: The choice of antibiotic depends on the infection and the clinician’s assessment.
- How they work: Antibiotics act against susceptible bacteria.
- Limitations: Anal fissures are not usually bacterial infections. Antibiotics are not routinely required and do not heal an uncomplicated fissure. Metronidazole or other antibiotics should only be used when specifically indicated by a doctor.
Can Medicines Permanently Cure an Anal Fissure?
Yes, many acute anal fissures can heal without surgery. Treatment usually focuses on keeping stools soft, avoiding straining, reducing sphincter spasm, and allowing the tear to heal.
Chronic fissures, particularly those that have persisted for several weeks, may be more difficult to treat. Some respond to prescription ointments and bowel-management measures, while others require additional treatment.
Anal sphincter tightness and reduced blood supply to the affected area can contribute to delayed healing. However, not every fissure has the same cause, and treatment needs to be individualized.
When Is Surgery Recommended for Anal Fissure?
Surgery may be considered when a chronic fissure does not heal despite an adequate course of medical treatment, or when symptoms continue to significantly affect daily life.
Surgical and Procedural Treatment Options
- Lateral Internal Sphincterotomy (LIS): This procedure involves carefully dividing a small portion of the internal anal sphincter to reduce excessive muscle pressure and help the fissure heal. It is an effective option for selected chronic fissures. However, it carries a risk of temporary or persistent difficulty controlling gas or stool, so patient selection is important.
- Botulinum Toxin Injection: Botulinum toxin can temporarily relax the internal anal sphincter. It may be considered as an alternative to surgery in selected patients, although repeat treatment may be needed and recurrence is possible.
- Fissurectomy: In selected cases, the surgeon removes the chronic fissure tissue to encourage healing. It may be combined with other treatments depending on the patient’s condition.
- Laser-Assisted Fissure Treatment: Some centres offer laser-based procedures for selected patients. The suitability, benefits, and long-term outcomes depend on the technique and individual case. Laser treatment should not be assumed to be superior to established procedures for every patient.
Possible Benefits and Risks of Surgery
Depending on the procedure and the patient’s condition, surgical treatment may:
- Reduce persistent sphincter spasm and pain.
- Help a chronic fissure heal when medical treatment has not worked.
- Reduce the likelihood of recurrence in appropriately selected patients.
- Be performed as a day-care procedure in many cases.
Recovery time varies. Possible complications include bleeding, infection, delayed wound healing, and changes in bowel control, particularly after sphincterotomy. No procedure can guarantee permanent relief or prevent every recurrence.
When Should You Consider a Surgical Consultation?
Consult a general or colorectal surgeon if you:
- Continue to experience anal pain or bleeding despite prescribed treatment.
- Have a fissure that has persisted for several weeks or appears chronic.
- Experience repeated fissures after previous healing.
- Have severe pain that interferes with daily activities.
- Notice a lump, swelling, discharge, or other symptoms that may indicate a different or additional condition.
Seek prompt medical attention if you develop fever, increasing anal swelling, pus discharge, or severe worsening pain, as these symptoms may indicate an infection or abscess. Heavy bleeding, dizziness, or fainting also require urgent assessment.
Final Takeaway
Medicines such as painkillers, laxatives, stool softeners, and prescription ointments play an important role in managing anal fissures. Many acute fissures heal with non-surgical treatment and consistent bowel-care measures. Chronic or recurrent fissures may need additional treatment, including botulinum toxin injections or surgery.
Explore treatment options for anal fissure and consult a qualified specialist to understand which approach is appropriate for your condition.
If you are experiencing persistent pain or bleeding during bowel movements, do not delay an evaluation. An experienced surgeon can assess the fissure and recommend a treatment plan based on its severity and your medical history.
