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The anus is one of the most sensitive parts of the body. Any injury, lump, abscess, or fecal impaction in the anal canal can result in severe pain leading to infection.

The patient's clinical history plays an important role in making the correct diagnosis. This is because lumps do not usually appear suddenly, but are rather the result of an undiagnosed mild gastrointestinal disorder, like chronic constipation. People who tend to pass stools once every 3 to 4 days may think this is normal for their body, but they are actually suffering from constipation without any symptoms.

There are several disorders that may cause lump in the anus. Listed below are the main disorders cause a lump in anus.

Anal Abscess: The accumulation of pus near the anus. This is a painful condition that is caused by an infected anal fissure. Blocked anal glands and anal sex are also some of the main causes of anal abscesses. People suffering from chronic constipation are prone to develop anal abscesses. This condition can be sudden in onset.

The infected area usually has a raised temperature. Patients may also develop a fever. A physical examination is enough to diagnose this condition, however a blood test (Complete Blood Count - CBC) can confirm the diagnosis.

This condition should not be ignored, as it may result in severe complications. You should visit your doctor as soon as possible. A general physician can usually treat this condition quite easily, but more complicated cases are referred to a colorectal surgeon.

Hemorrhoids: A swelling of the veins in the anal canal. Hemorrhoids can be internal or external. This disorder usually occurs due to chronic constipation or inflammatory bowel disease. Hemorrhoids have different presentations but patients usually complain of a lump in their anus or sometimes, they complain of something coming out of their anus. This condition is not as severe as an anal abscess but untreated hemorrhoids can cause serious harm.

Anal fissure: A tear or breakage in the continuity of anal canal is called an anal fissure. Large hard stools, chronic constipation, repeated diarrhea, and giving birth are the most common causes of this disorder. Digital rectal examination, anal intercourse, or a foreign object are also known to cause tears in the wall of the anal canal.

Patients who have an anal fissure complain of a stinging sensation, burning pain, and itching around the anus particularly during bowel movements. The chief complaint is usually blood with stools.

The tear in the wall may result in bleeding from the damaged part of the canal. Sometimes, the bleeding can be internal which may result in the appearance of a small lump around the anus which is often painful. Putting pressure on the anus, for example sitting, exaggerates the pain. It is easy to diagnose and treat this disease; however, it is necessary to get it treated as soon as possible.

Some other causes that are associated with a painful lump in the anus include:

  • Colorectal carcinoma (cancer)

  • Anal fistula

Regardless of the disorder causing these symptoms, you are advised to visit your doctor as soon as possible. These lumps should never be ignored.

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