Pain and Discharge from the Anus: When to Seek Medical Help - Surgery

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Anal discharge of pus


Hello, doctor: I have been experiencing pain on one side of my anus for three days, with slight swelling and pus discharge.
It doesn't hurt when I have a bowel movement, but other movements that strain the anal muscles or any pressure on that area are very painful, and passing gas also causes pain.
Previously, I had itching in that area and scratched it.
Someone told me that I might have a pressure ulcer due to sitting too long and suggested using medication for skin inflammation, but I am worried it might be something else.
I am hesitant to apply any medication without knowing for sure.
Should I see a doctor? If it is a pressure ulcer, what should I do? Thank you, doctor.

A-Hsiang, 20~29 year old female. Ask Date: 2016/02/12

Dr. Xu Kaixi reply Surgery


Based on your description, the pain near the anus accompanied by purulence may indicate an anal abscess or an infected fistula.
It is recommended that you visit a surgical outpatient clinic for examination.

Reply Date: 2016/02/12

More Info


When experiencing pain and discharge from the anus, it is essential to seek medical attention, especially if the symptoms persist for more than a couple of days. In your case, the pain, slight swelling, and discharge suggest that there may be an underlying issue that requires professional evaluation.
Based on your description, the symptoms could be indicative of several conditions, including but not limited to:
1. Anal Abscess: This is a collection of pus that can occur near the anus, often resulting from an infection. Symptoms typically include pain, swelling, and discharge. The fact that you have pus suggests that an abscess might be present, which often requires drainage by a healthcare professional.

2. Fistula-in-Ano: This is a small tunnel that can develop between the end of the bowel and the skin near the anus, often as a result of an anal abscess. Symptoms may include pain, swelling, and discharge, and it usually requires surgical intervention.

3. Hemorrhoids: Swollen veins in the lower rectum and anus can cause pain, itching, and sometimes bleeding. While hemorrhoids typically do not cause pus, they can be associated with anal discomfort.

4. Skin Irritation or Infection: If you have been scratching the area due to itching, it might lead to skin irritation or secondary infection, which could also cause pain and discharge.

5. Fungal or Bacterial Infections: These can occur in the anal area, especially if there is moisture or irritation, leading to pain and discharge.

Regarding your concern about pressure sores (decubitus ulcers), these typically occur in individuals who are immobile for extended periods. While sitting for long durations can lead to skin irritation, it is less common for this to occur specifically in the anal area unless there is significant pressure and lack of movement. If you suspect that you may have developed a pressure sore, it is crucial to change positions frequently, keep the area clean and dry, and use appropriate barrier creams to protect the skin.

Given the symptoms you are experiencing, it is advisable to see a healthcare provider. They can perform a physical examination, possibly including a digital rectal exam, to determine the cause of your symptoms. They may also recommend imaging studies if necessary.
In the meantime, avoid applying any topical medications without medical advice, as inappropriate use could exacerbate the condition. If you experience worsening symptoms, such as increased pain, fever, or significant changes in discharge, seek immediate medical attention.

In summary, while some conditions may resolve on their own, the presence of pain, swelling, and discharge from the anus warrants a medical evaluation to rule out serious conditions and to receive appropriate treatment. It is always better to err on the side of caution when it comes to health concerns.

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