Anal fissures are small tears in the thin, moist tissue lining the anus that commonly cause pain and bleeding during bowel movements1 . They can affect people of all ages but are especially common in infants and young children1 . Most anal fissures heal on their own within a few weeks with simple treatments, but persistent or severe symptoms may require medical intervention2 . Understanding the symptoms and signs of anal fissures can help in early recognition and management to prevent complications3 .
Key Anal Fissure Symptoms
The hallmark symptoms of an anal fissure include sharp pain during and after defecation and bright red bleeding4 . The pain is often described as sharp, burning, tearing, or cutting and can be severe enough to last for several hours after a bowel movement5 3. Patients may also experience burning or itching sensations around the anus5 . The affected area is usually very tender to touch and may feel like a small, raised laceration or crack in the skin4 5. Bright red blood is commonly seen on the stool, toilet paper, or in the toilet bowl after defecation4 3.
- Sharp, severe pain during bowel movements4
- Pain lasting for minutes to several hours after defecation5 3
- Burning or itching sensations around the anus5
- Bright red blood on stool or toilet paper4
- Tenderness and visible crack or tear near the anus5 1
💡 Did You Know? An anal fissure is a small tear in the thin, moist tissue that lines the anus. Common causes include constipation and straining or passing hard or large stools during a bowel movement1 .
Types of Anal Fissures and Their Symptoms
Anal fissures are classified as acute or chronic based on their duration and characteristics. Acute fissures typically last less than six weeks and are usually superficial, while chronic fissures persist beyond six weeks and tend to be deeper with more complex features5 .
Acute Symptoms
Acute anal fissures cause sharp pain during defecation that may last several minutes to a few hours afterward5 6. These fissures are usually superficial tears that heal within a few weeks with conservative treatment5 . Bleeding is less common in acute fissures compared to chronic ones5 . The symptoms are generally less severe and resolve more quickly than chronic fissures5 .
- Last less than six weeks5
- Sharp pain during and shortly after bowel movements5 6
- Superficial tear in the anal lining5
- Less frequent bleeding5
- Symptoms resolve with conservative care within weeks5
Chronic Symptoms
Chronic anal fissures last more than six weeks and are characterized by deeper tears that may expose underlying muscle fibers5 . They often have raised or thickened edges and may develop sentinel piles (small skin tags) near the fissure5 . Pain tends to be more persistent and severe, lasting for hours after defecation and sometimes throughout the day, especially with frequent bowel movements5 . Bleeding is more common and may be recurrent5 . Untreated chronic fissures can lead to complications such as infections, fistula formation, and incontinence5 7.
- Persist beyond six weeks5
- Deeper tear exposing muscle fibers5
- Raised or thickened edges and skin tags (sentinel piles) 5
- Severe, persistent pain lasting hours or all day5
- More frequent and noticeable bleeding5
- Risk of complications like infection and fistulas7 5
| Feature | Acute Fissure | Chronic Fissure |
|---|---|---|
| Duration | < 6 weeks | > 6 weeks |
| Depth of Tear | Superficial | Deeper, may expose muscle |
| Pain Severity | Sharp, less persistent | Severe, persistent |
| Bleeding Frequency | Less common | More common |
| Tissue Changes | None or minimal | Raised edges, sentinel piles |
| Healing | Usually heals with conservative care5 | May require medical or surgical treatment5 |
Anal Fissure Symptoms in Children
Anal fissures are the leading cause of rectal bleeding in children, especially infants4 8. Symptoms in children are similar to those in adults and include pain during defecation, bleeding, and tenderness around the anus4 . Children may avoid or delay bowel movements due to pain, which can lead to constipation and worsen the fissure4 . Acute fissures in children are usually superficial and heal within a few weeks with home care, while chronic fissures are deeper and may have thickened edges or skin tags5 910.
- Pain and bleeding during bowel movements similar to adults4
- Rectal bleeding visible on toilet paper or stool4
- Tenderness and visible tear near the anus4 9
- Stool withholding due to pain, leading to constipation4
- Acute fissures heal within weeks; chronic fissures may require medical treatment5 10
Parents are advised to encourage children to maintain a high-fiber diet, stay hydrated, and avoid straining during bowel movements to help prevent and heal fissures9 10.
“Many people feel embarrassed or concerned about speaking about certain things with their doctors, but I'm here to reassure you these are the kinds of things we deal with every day. For me, looking at someone's bottom or their breasts or their genitalia is no different than looking at their nose or elbow.”
— Dr Naveen Puri, Bupa Health Clinics11
When to See a Doctor for an Anal Fissure
Most anal fissures heal on their own with simple home treatments such as increasing fiber intake, drinking fluids, and taking warm baths1 11. However, you should see a healthcare provider if symptoms persist beyond six weeks, if pain is severe, or if bleeding is heavy or recurrent5 . Medical evaluation is important to confirm the diagnosis and rule out other conditions that may cause similar symptoms12 .
Children with anal fissures should be evaluated if they have worsening pain, increased bleeding, or difficulty passing stools10 . Avoiding bowel movements due to pain can lead to constipation and further complications, so timely medical advice is essential4 .
- Persistent symptoms beyond six weeks5
- Severe or worsening pain5
- Heavy or recurrent rectal bleeding4
- Difficulty or pain during bowel movements causing stool withholding4
- Signs of infection or complications such as fever or swelling5
Anal Fissure Symptoms Summary
Anal fissures cause a distinct set of symptoms that usually include sharp pain during bowel movements, burning or itching sensations afterward, and bright red bleeding4 5. The pain is often severe and can last for hours, especially in chronic cases5 . The affected area is tender and may show a visible tear or skin tag5 . Most fissures heal spontaneously with conservative measures, but untreated chronic fissures can lead to complications such as infections, fistulas, and incontinence5 7.
- Sharp, severe pain during and after defecation lasting minutes to hours5
- Burning and itching sensations around the anus5
- Bright red blood on stool, toilet paper, or in the toilet bowl4
- Tenderness and visible crack or skin tag near the fissure5
- Most heal with home care; persistent fissures need medical treatment5
Anal Fissure FAQs
What causes anal fissures?
Anal fissures are caused by trauma to the anal lining, often from passing hard or large stools, constipation, straining during bowel movements, or prolonged diarrhea1 2.
How long do anal fissure symptoms last?
Most acute fissures heal within a few days to weeks. Chronic fissures last longer than six weeks and may require medical or surgical treatment5 2.
Can anal fissures cause serious problems?
If untreated, chronic fissures can lead to infections, fistulas (abnormal connections), and incontinence. However, most fissures heal without complications7 5.
What treatments are available?
Treatment includes increasing fiber and fluids, sitz baths, topical ointments, and in some cases, medications like nitroglycerin or Botox injections. Surgery is reserved for chronic fissures that do not heal with medical therapy2 11.
Are anal fissures common in children?
Yes, anal fissures are the most common cause of rectal bleeding in children and infants. Symptoms and treatment are similar to adults, with an emphasis on preventing constipation4 9.
