Most Fissures Heal Without Surgery — But Chronic Ones Need Expert Care
An anal fissure is a small tear in the lining of the anal canal that causes sharp, cutting pain during bowel movements and often bright red bleeding. It is one of the most common anorectal conditions and one of the most painful. The good news is that most acute fissures — those present for less than 6-8 weeks — heal with conservative treatment alone. Chronic fissures, however, develop a cycle of spasm and poor blood flow that prevents healing, and these cases may require surgical intervention. At our practice, we follow a structured treatment ladder: conservative measures first, surgery only when truly needed. And before any surgical intervention, we investigate — because a fissure in an unusual location or one that does not respond to treatment can be a sign of an underlying condition like Crohn's disease.
الشرخ الشرجي — اغلب الحالات بتتحسن من غير جراحة، بس الحالات المزمنة محتاجة تدخل متخصص
What Causes Anal Fissures?
ايه اسباب الشرخ الشرجي؟
Understanding the cause of a fissure is essential for choosing the right treatment and preventing recurrence:
Constipation and hard stools: The most common cause. Passing a large, hard stool tears the anal lining. This is why dietary modification is the foundation of both treatment and prevention — fiber intake, hydration, and stool softeners address the root cause.
Chronic diarrhea: Frequent loose stools can also damage the anal lining through repeated irritation. Patients with irritable bowel syndrome or food intolerances may develop fissures from this mechanism.
Childbirth: Vaginal delivery can cause anal fissures due to the mechanical stretching of the perineum. These fissures are often posterior and typically heal with conservative management.
Crohn's disease: Fissures in unusual locations — lateral (on the side) rather than posterior (at the back) — raise concern for Crohn's disease. Multiple fissures or fissures that do not heal despite proper treatment should prompt further investigation, including colonoscopy. This is one of the reasons we advocate for thorough diagnostic evaluation, especially in atypical cases. Read about our diagnostic-first approach.
Acute vs. chronic: An acute fissure looks like a fresh tear with sharp edges. A chronic fissure develops thickened edges, a sentinel skin tag externally, and a hypertrophied anal papilla internally. The chronic fissure also has an internal sphincter spasm that reduces blood flow to the area, creating a vicious cycle that prevents spontaneous healing.
Treatment: Conservative First, Surgery When Needed
العلاج: المحافظ الأول، والجراحة لما تكون ضرورية
We follow an evidence-based treatment ladder for anal fissures. Most patients never need surgery:
Step 1 — Lifestyle and dietary changes: High-fiber diet (25-30g daily), adequate water intake (2-3 liters daily), and avoiding straining. Warm sitz baths for 10-15 minutes after bowel movements relax the sphincter and improve blood flow. These simple measures heal the majority of acute fissures within 4-6 weeks.
Step 2 — Topical medications: If dietary changes alone are insufficient, we add topical treatments. Glyceryl trinitrate (GTN) 0.2-0.4% ointment or diltiazem 2% cream applied to the anal margin two to three times daily. These medications chemically relax the internal sphincter, improving blood supply to the fissure and promoting healing. Success rates are 50-70% for chronic fissures over 6-8 weeks of consistent use. Side effects are generally mild — headache with GTN is the most common.
Step 3 — Botulinum toxin injection: For fissures that fail topical therapy, injection of botulinum toxin into the internal sphincter provides temporary relaxation lasting 2-3 months. Healing rates are similar to topical therapy but compliance is not an issue since it is a single injection. This is an intermediate option before considering surgery.
Step 4 — Lateral internal sphincterotomy (LIS): The definitive surgical treatment for chronic anal fissure. A controlled, partial division of the internal sphincter muscle relieves the spasm permanently. Healing rates exceed 95%. The procedure takes 10-15 minutes under anesthesia. The risk of minor incontinence to flatus is approximately 5-10%, which resolves in most patients. We perform a tailored sphincterotomy — dividing only what is needed, based on the length of the fissure.
نعالج السبب مش بس العرض — الشرخ الشرجي ليه حل لو اتعامل صح
Related information:
- Anorectal surgery overview — why we diagnose before we treat
- Hemorrhoids — a different condition, sometimes confused with fissures
- Recovery science — what to expect after surgery
- Diet and nutrition — fiber and hydration are the foundation of fissure treatment
- Do you really need surgery? — our conservative-first approach
- Financing options — installment plans available
