13177 Anal Fissures

Overview

An anal fissure is a small tear or crack in the delicate lining of the back passage (anus). It often causes pain and slight bleeding during or after a bowel movement. Although it can be very uncomfortable, it is a common problem and usually heals with simple care.

Yes, anal fissures are very common. They affect about 1 in 350 people at any given time, and many people will have one at some point in their lives.

Anal fissures can affect people of all ages—from babies, who may get them after passing hard stools, to older adults, who may get them due to constipation or other health conditions. They occur equally in men and women, and are especially common in children and in adults between 20 and 50.

Symptoms

Common symptoms

• A sharp, burning, or stinging pain during and after a bowel movement, often lasting for a few minutes or longer
• Bright red blood on the toilet paper or on the surface of the stool
• An itching or irritation around the back passage
• A visible small tear or crack when gently stretching the skin near the anus
• Tenderness or discomfort when cleaning the area

Symptoms in children

• Pain or crying during a bowel movement
• Holding in stools because of fear of pain (leading to worse constipation)
• Bright red blood on the diaper, toilet paper, or in the stool
• Noticing the child straining or sitting poorly due to discomfort

Symptoms in older adults

• Symptoms may be less noticeable, but pain during or after a bowel movement is still common
• Blood on toilet paper or in the toilet bowl
• Constipation from medications, reduced mobility, or low fluid intake
• Older adults may assume the bleeding is due to hemorrhoids, but it is important to have it checked by a healthcare professional

Causes

Main causes

• Passing a hard or large stool that stretches the anal lining too much and causes a tear
• Chronic constipation, often from a low-fiber diet or not drinking enough fluids
• Prolonged straining during a bowel movement
• Diarrhea or frequent loose stools that irritate the anal area
• Childbirth, which can put pressure on the area and cause a tear

Risk factors

• A diet low in fiber or fluids
• Sedentary lifestyle or sitting for long periods
• Pregnancy and childbirth
• Inflammatory bowel conditions, like Crohn's disease or ulcerative colitis
• Having had anal surgery or trauma to the area

When to see a doctor

See a doctor urgently if:

• If you see bright red blood and feel lightheaded or dizzy
• If the bleeding is heavy or continuous
• If you have a high fever, chills, or severe abdominal pain

Book a routine appointment if:

• If you have symptoms like anal pain, itching, or blood on the toilet paper, and they last for more than a few days
• If the fissure doesn't heal within 3 weeks
• If you notice changes in your bowel habits or the pattern of symptoms

Diagnosis

A healthcare provider can usually diagnose an anal fissure by listening to your symptoms and looking at the back passage. The examination is quick and often done in the office by gently separating the buttocks to see the tear. No special scans are needed in most cases.

Tests that may be done

• Visual inspection of the anal area
• A gentle digital rectal exam (the doctor inserts a gloved finger to feel for any other problems)
• Anoscopy (a small tube with a light to look inside the anal canal) if more detail is needed
• Sometimes, further tests like a colonoscopy may be recommended if the fissure is unusual or keeps coming back

What to expect at your appointment

The appointment is usually straightforward and fast. The doctor or nurse will ask about your symptoms and medical history, then perform a gentle examination. It may feel a little uncomfortable, but it should not be very painful. They will explain what they find and recommend a treatment plan tailored to you.

Treatment

Treatment for an anal fissure starts with simple measures to soften the stool and reduce pain. Most fissures heal with these steps alone. If the fissure is stubborn, your healthcare provider may suggest other medical treatments or, in rare cases, a minor surgical procedure.

Self-care at home

• Eat a high-fiber diet with plenty of fruits, vegetables, whole grains, and pulses to make stool softer and easier to pass
• Drink plenty of water each day (aim for 6 to 8 glasses unless your doctor says otherwise)
• Soak in a warm bath (sitz bath) for 10 to 15 minutes several times a day, especially after a bowel movement, to relax the muscle and help healing
• Avoid straining on the toilet; give yourself plenty of time and don't delay the urge to go
• Keep the area clean and dry; use moist wipes or gentle cleaning, and pat gently instead of rubbing
• Use a cushion or padded seat if sitting is uncomfortable

Medical treatments

Your healthcare provider may recommend over-the-counter creams or medicine to numb the pain (topical anesthetics), medications to soften the stool, or prescription creams that help relax the anal muscle and improve blood flow so the tear can heal. In some cases, a medicine called botulinum toxin (Botox) may be injected into the anal muscle to help it relax. Always follow your provider's advice about these treatments, and do not use any medication without checking with a pharmacist or doctor.

When is surgery considered?

If a fissure has not healed after several weeks of proper treatment, or if it keeps coming back, a simple surgical procedure called lateral sphincterotomy may be offered. This minor operation relaxes the anal muscle, allowing the fissure to heal. It is usually very successful and has a low risk of problems.

Living with this condition

Living with an anal fissure can be uncomfortable, but knowing how to manage it makes a big difference. Try to have a regular bowel routine, stay gentle with the area, and keep up with your treatment. Warm sitz baths can become part of your daily routine, and wearing loose, comfortable underwear can help reduce irritation.

Lifestyle tips

• Eat meals that are high in fiber and avoid skipping meals to keep your digestion regular
• Drink enough fluids daily—water is best—to keep stools soft
• Move your body regularly; a short walk after meals can help stimulate bowel movement
• Practice good bathroom habits: sit when you have the urge, and don't push or strain
• After a bowel movement, clean the area gently with water or unscented wipes and pat dry

Diet and exercise

A diet rich in dietary fiber (aim for 25 to 30 grams per day) helps prevent constipation and healing. Include oats, apples, pears, leafy greens, carrots, and baked potatoes. Regular exercise, like brisk walking for 30 minutes most days, helps keep your bowels moving. Avoid heavy lifting and very intense workouts during a painful flare-up, but light activity is fine.

Mental health and emotional wellbeing

Anal pain can be emotionally tough—it is common to feel anxious, embarrassed, or low when dealing with a condition in this sensitive area. It may also affect sleep and mood. Please remember that your feelings are valid, and it is important to talk to your healthcare provider about any emotional distress. If you ever feel overwhelmed or hopeless, reach out to your local mental health crisis support line for help.

Prevention

Many anal fissures can be prevented, or made less likely, by keeping your stools soft and your anal area healthy. This means eating enough fiber, staying hydrated, and responding to the urge to go to the toilet without delaying. Not all fissures can be prevented, especially those caused by childbirth or certain medical conditions, but these steps reduce the risk.

Vaccines

There is no vaccine for anal fissures.

Complications

If left untreated

• If a fissure doesn't heal, it may turn into a chronic fissure (lasting more than 8 weeks), which is harder to treat
• Repeated tearing can lead to a sentinel tag (a small lump of skin) or a hypertrophied anal papilla, which are harmless but can cause discomfort
• Rarely, an anal fissure can become infected and lead to an anal abscess or a tunnel called an anal fistula, which requires medical treatment
• Without proper care, you may continue to feel pain and bleeding for a long time, which can affect your quality of life

Long-term outlook

The outlook for anal fissures is very good. Around half of fissures heal with simple self-care, and most of the rest heal with medical treatment. Even if surgery is needed, it is usually successful and the fissure heals without further issue. So, there is every reason to be hopeful—getting the right advice early offers the best chance of a quick recovery.

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