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Anal Fissure

Overview

A small crack in the lining of the anus, called an anal fissure, is a common problem. The anus is the opening where stool leaves the body. This tear often happens because of straining during bowel movements. Hard, large, or frequent stools can put pressure on the anus and cause a tear. This usually leads to pain and bleeding when you have a bowel movement. You might also feel the muscles around your anus, called the anal sphincter, tightening or cramping.

Anal fissures are fairly frequent, especially in babies. However, anyone can get them at any age. Most of the time, simple home treatments can help. Increasing fiber in your diet, such as by eating more fruits, vegetables, and whole grains, can help soften stools. Soaking in a warm bath can also ease the pain. In some cases, medical professionals might recommend pain relievers or other medications. If these methods don't work, surgery may be an option.

Symptoms

Anal fissures are small tears in the skin around the anus. They often cause discomfort and bleeding. Here's what to look for:

  • Pain during bowel movements: This is a common symptom. The pain can be sharp and intense.

  • Pain after bowel movements: The discomfort might linger for a few hours after you go to the bathroom.

  • Blood on the stool or toilet paper: The blood is usually bright red, meaning it's fresh. It might be on the stool itself or on the toilet paper after wiping.

  • Visible crack: Sometimes, you can see a small crack in the skin around the anus.

  • Small lump or skin tag: A small bump or skin growth might be present near the tear.

If you experience any of these symptoms, it's important to see a doctor or other healthcare provider. Don't ignore pain during bowel movements or blood in your stool. Early diagnosis and treatment can help heal the fissure and prevent further problems.

When to see a doctor

If you feel pain when you have a bowel movement, or if you see blood on your stool or toilet paper, it's important to see a doctor. This could be a sign of a problem that needs medical attention. Don't ignore these symptoms. A doctor can figure out what's causing the problem and recommend the best treatment.

Causes

Anal fissures, small tears in the lining of the anus, can have several causes. A common reason is having hard or large bowel movements. When you strain to pass these difficult stools, you increase the risk of tearing the delicate lining. Similarly, long periods of constipation, where bowel movements are infrequent and difficult, can also lead to fissures. Loose, watery stools from diarrhea can also irritate and damage the anal area, potentially causing a fissure over time. Sexual activity, like anal intercourse, can sometimes cause these tears. Finally, the physical stress of childbirth can also result in anal fissures.

While the above are the most frequent causes, there are less common situations that can lead to anal fissures. Conditions like Crohn's disease and other inflammatory bowel diseases can inflame the lining of the digestive tract, potentially causing fissures. Similarly, certain cancers, like anal cancer, can cause problems in the area. Infections like HIV, tuberculosis, or syphilis can also sometimes play a role in anal fissure development. It's important to note that these less common causes are often linked to underlying medical conditions.

If you experience anal pain or discomfort, it's crucial to talk to a doctor. They can properly diagnose the cause and recommend the best course of treatment.

Risk factors

Anal fissures, small tears in the lining of the anus, can be painful. Several things can make a person more likely to get one.

Straining during bowel movements is a major risk factor. Pushing hard to pass hard, dry stools can put a lot of pressure on the delicate anal tissue, leading to a tear. This is closely related to constipation. If you're regularly struggling to have bowel movements, it's important to address the underlying constipation to help prevent fissures.

Childbirth can also increase the risk of anal fissures in women. The pressure and stretching during delivery can sometimes damage the anal area.

Crohn's disease, a long-lasting inflammatory condition affecting the digestive system, can also make anal fissures more likely. The chronic inflammation can weaken the lining of the anus, making it more prone to tearing.

Anal intercourse can also sometimes lead to anal fissures. The friction and pressure involved can potentially cause the tissue to tear.

While anal fissures can happen at any age, they're more common in babies and young children due to developmental factors and potentially harder stools. They are also more common in middle-aged adults, possibly due to lifestyle factors and the natural wear and tear on the body over time.

Complications

Anal fissures can sometimes cause problems beyond the initial pain. If an anal fissure doesn't get better within about eight weeks, it's called a chronic fissure and might need more specialized care.

Another potential complication is recurrence. If you've had one anal fissure, you're more likely to get another.

Sometimes, the tear from the fissure can reach the muscles that help control your bowel movements. These muscles form a ring around the anus, called the internal anal sphincter. If the fissure extends to these muscles, it can make healing much harder. This can lead to a cycle of pain and discomfort. In such cases, your doctor may recommend medication or surgery to relieve the pain and fix the fissure.

Prevention

Anal fissures, small tears in the lining of the anus, can sometimes be avoided. One important way is to manage your bowel movements. Constipation and diarrhea can both make it harder to have a regular bowel movement, and straining during these movements can contribute to fissures.

To help prevent these problems, focus on a healthy diet. Eating plenty of high-fiber foods, like fruits, vegetables, and whole grains, can help keep your stool soft and easy to pass. Drinking enough fluids, like water, is also crucial for keeping your digestive system working smoothly. Regular exercise can also help keep things moving along and prevent straining. Combine these healthy habits for a better chance of avoiding anal fissures.

Diagnosis

A doctor will typically ask about your medical history and do a physical exam, which might include gently checking your anal area. A tear, if present, is often visible during this exam. This exam is usually enough to diagnose a tear in the lining of the anus, called an anal fissure.

There are two main types of anal fissures. A new, or acute, fissure looks like a small, fresh cut, similar to a paper cut. A long-lasting, or chronic, fissure is likely a deeper tear. It might also have extra skin or tissue growths, either inside or outside the anus. A fissure is considered chronic if it's been present for more than eight weeks.

Where the fissure is located can help doctors figure out the cause. A fissure on the side of the anus, rather than the front or back, might be a sign of a different problem, like Crohn's disease. If this is suspected, the doctor might recommend further tests.

These tests can help find out if there's an underlying problem causing the fissure. Here are some common tests:

  • Anoscopy: A thin, tube-like tool called an anoscope is inserted into the anus to look at the rectum and anus.

  • Flexible Sigmoidoscopy: A thin, flexible tube with a camera at the end is inserted into the lower part of the large intestine (colon). This test might be recommended for people under 45 who don't have any risk factors for diseases of the intestines or colon cancer.

  • Colonoscopy: A long, flexible tube with a camera is inserted into the rectum to examine the entire colon. This test might be done for people who:

    • Are 45 or older.
    • Have a higher chance of getting colon cancer (risk factors).
    • Have symptoms of other colon problems.
    • Have other symptoms, such as stomach pain or diarrhea.

By understanding the type and location of the fissure, and by performing these tests when needed, doctors can diagnose and treat the underlying cause of the problem.

Treatment

Anal fissures usually heal within a few weeks at home. To help, make your stool softer by eating more fiber and drinking plenty of fluids. Soaking in warm water for 10-20 minutes several times a day, especially after bowel movements, can help relax the muscles around your anus and speed up healing.

If the problem continues, you might need more help from a doctor. Possible treatments include:

  • Nitroglycerin cream (Rectiv): This cream can improve blood flow to the fissure and relax the muscles, helping it heal. It's often used when other methods don't work. A common side effect is a headache, sometimes a strong one.

  • Anesthetic creams (like lidocaine): These creams can help reduce the pain.

  • Botox injections: Botox injections temporarily relax the muscles around the anus, easing pain and spasms.

If the fissure is long-lasting (chronic) and other treatments don't work, or if the pain is very severe, surgery might be an option. A common surgical procedure is called lateral internal sphincterotomy (LIS). This involves cutting a small part of the muscle around the anus. This can help the fissure heal and reduce pain.

Studies suggest that surgery is often more effective than other treatments for long-term anal fissures. However, there's a small chance surgery could cause problems with controlling bowel movements (incontinence).

(Note: The original text had a reference to an unsubscribe link. This is removed as it seems out of place in an article about anal fissures.)

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