Summary:
- Anal fissures are tiny tears in the lining of your anal canal that can cause sharp pain, bleeding, and discomfort during bowel movements. Some fissures heal quickly on their own, while others linger and become chronic, making everyday activities painful.
- Acute fissures usually improve within a few weeks with simple care like stool softening, hydration, and topical creams.
- Chronic fissures, however, persist due to repeated sphincter spasms, scar tissue, and reduced blood flow, often requiring more focused interventions to fully heal.
If you’ve experienced a sharp, burning pain when passing stool, you could be dealing with an anal fissure. These tiny tears in the lining of your anal canal may seem minor, but they can cause a surprising amount of discomfort.
The tricky part is that not all fissures behave the same way; some heal on their own within a few weeks, while others linger, turning chronic and requiring more focused care to fully heal.
Keep reading to learn how acute and chronic anal fissures differ so you can get the right treatment and avoid unnecessary discomfort.
Anal fissures are tiny tears in the skin or mucous lining of your anal canal. While they may look small, they can cause significant pain and even bleeding.
Think of them like paper cuts, but in a highly sensitive area. A small tear may heal on its own, but ongoing strain can prevent it from closing and turn it into a chronic issue.
These tears often occur when the tissue around your anus is stretched too far. Even the simplest bowel movement can become excruciating if you already have a fissure. The pain may be sharp, burning, or even make you feel tense between bowel movements, especially if the fissure persists.
Common Causes and Triggers
Anal fissures can happen to anyone, but some triggers make them more likely:
- Constipation or hard stools: Straining puts pressure on the anal lining.
- Chronic diarrhoea: Frequent irritation can wear down tissue.
- Straining during bowel movements: Even short-term stress can tear delicate tissue.
- Childbirth or anal trauma: Physical stress can lead to tears.
- Underlying conditions: Inflammatory bowel disease or infections may contribute.
While these are common triggers, lifestyle factors like hydration, diet, and bowel habits also play a role in how easily fissures develop or persist.
Symptoms to Watch For
Knowing the signs can help you catch a fissure early:
- Sharp, burning pain during or after bowel movements
- Bright red blood on the toilet paper or stool
- Itching, irritation, or discomfort around the anus
- Small lumps or skin tags in chronic cases
- Spasms in the anal sphincter
How Do Acute and Chronic Fissures Differ?
Symptoms to Watch For
Acute fissures typically appear suddenly after hard stools or straining. Pain is sharp and immediate during bowel movements, sometimes lasting a few minutes afterwards. Bleeding is usually minor, and discomfort often improves within a few days with simple care.
Chronic fissures, however, are more persistent. Pain can linger between bowel movements, bleeding may continue or recur, and you might notice a small lump or skin tag near the tear. Chronic fissures can also cause ongoing sphincter spasms, making bowel movements even more uncomfortable.
Healing Timelines
Healing timelines differ depending on the type of fissure:
- Acute fissures: Often heal within four to six weeks if you stay hydrated, use simple topical care and the stools soften.
- Chronic fissures: Can last beyond six to eight weeks, sometimes months, and rarely heal without medical intervention.
If your fissure hasn’t improved in a few weeks despite self-care, it’s time to consider professional treatment. Delaying care can make healing slower and more complicated.
When a Fissure Becomes Chronic
A fissure is considered chronic when repeated trauma, sphincter spasms, or poor blood supply prevent it from healing naturally. Scar tissue may form around the tear, making it harder to treat with home remedies.
At this stage, your doctor may recommend more specialised approaches to relieve pain and promote healing.
Experiencing anal pain and unsure if it’s a fissure? Contact us so we can assess your condition, guide you on the right approach, and help you find relief quickly.
Why Can’t All Fissures Be Treated the Same Way?
Limits of Topical Medication
For acute fissures, you can often rely on topical creams or ointments that relax the sphincter or boost blood flow. They relieve pain, promote healing of the tear, and typically show results within a few weeks.
Chronic fissures, however, don’t respond as easily. Scar tissue, ongoing muscle spasms, and poor blood flow keep the tear open, so simple creams alone usually won’t be enough.
When Procedures May Be Needed
When medication and lifestyle changes aren’t enough, especially for chronic anal fissures, your doctor may suggest minimally invasive treatments such as:
- Lateral internal sphincterotomy: This involves making a small incision in the anal sphincter to relieve pressure. This helps blood flow improve and allows the fissure to heal faster.
- Anal advancement flap (or mucosal flap): In more stubborn cases where the fissure hasn’t healed despite other procedures, a small piece of healthy tissue may be used to cover the fissure. This encourages healing while protecting the area from further trauma.
What Happens If Diagnosis Is Delayed?
Persistent Sphincter Spasms
Reduced Blood Flow
More Complex Treatment
Speak to a Colorectal Specialist in Singapore
If you have anal pain that lasts more than a few weeks, recurs, or worsens despite simple care, it’s time to consult a colorectal specialist.
At Advanced Colorectal and General Surgery in Singapore, our experienced colorectal surgeon, Dr QM Leong can access whether your fissure is acute or chronic and recommend a combination of lifestyle changes, medication and procedures to prevent further complications and speed up recovery.
