Furunculosis or Anal Abscess: Your Symptoms - Surgery

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Folliculitis or perianal abscess?


Hello Doctor, I noticed a bump near my anus that resembles a pimple while showering on the evening of January 20th.
It only hurts when pressed.
I visited a dermatology clinic on January 21st, where it was diagnosed as folliculitis, and I underwent immediate incision and drainage.
I had a colonoscopy on October 21st of last year due to rectal bleeding, which revealed an anal fissure, but I have not experienced any rectal bleeding since then.
As of January 22nd, the affected area has not been painful and appears darker in color.
However, my colleague keeps telling me that the symptoms and location suggest a fistula.
Here is a photo: https://drive.google.com/drive/folders/1eXmFJXkn3GmX2ZqHDgC-nJ7CLrpxlYzU.
If possible, could you take a look at the affected area? Additionally, I would like to ask if the best course of action is to wait? If it recurs and forms a drainage channel, should I then consult a colorectal surgeon? Thank you.

Nìmíng nán, 30~39 year old female. Ask Date: 2021/01/22

Dr. Ke Fangxu reply Surgery


Although an accurate diagnosis cannot be made solely based on photos, it appears to be a simple case of folliculitis.
However, a definitive diagnosis should be made by a physician through examination.
For now, it may be advisable to continue monitoring the situation.

Reply Date: 2021/01/22

More Info


Furunculosis and anal abscesses are two conditions that can cause discomfort and concern, particularly when they occur in sensitive areas such as the anal region. Understanding the symptoms and management of these conditions is crucial for effective treatment and prevention of recurrence.

Furunculosis, commonly known as boils, is a skin infection that occurs when hair follicles become infected with bacteria, often Staphylococcus aureus. These infections typically present as painful, swollen lumps filled with pus. They can occur anywhere on the body but are particularly common in areas where friction occurs, such as the armpits, thighs, and buttocks. In your case, the lesion near the anal area was diagnosed as folliculitis, which is an inflammation of the hair follicles that can lead to the formation of a boil.

On the other hand, an anal abscess is a collection of pus that forms near the anus or rectum, often due to an infection in the anal glands. Symptoms of an anal abscess may include severe pain, swelling, redness, and sometimes fever. If left untreated, an anal abscess can lead to the formation of a fistula, which is an abnormal connection between the anal canal and the skin. This can result in recurrent infections and discomfort.

In your situation, it seems that you initially experienced a boil that was treated with incision and drainage. The fact that the area is now darkening and you are experiencing no significant pain is a positive sign, suggesting that the infection may be resolving. However, your colleague's concern about the possibility of a fistula is valid, especially given your history of anal fissures and the location of the lesion.

Here are some recommendations for managing your condition:
1. Observation: Since the lesion is currently not causing significant discomfort, it may be appropriate to monitor it for any changes. Keep an eye on the area for signs of recurrence, such as increased pain, swelling, or drainage.

2. Hygiene: Maintain good hygiene in the anal area to prevent further infections. This includes gentle cleansing and avoiding irritants.

3. Avoiding Irritation: Wear loose-fitting clothing and avoid activities that may cause friction in the affected area.

4. Follow-Up: If you notice any worsening of symptoms or if the lesion reoccurs, it would be prudent to consult a colorectal surgeon. They can perform a thorough examination and determine if further intervention is necessary, such as imaging studies to assess for a fistula.

5. Pain Management: If you experience discomfort, over-the-counter pain relievers may help alleviate symptoms.

6. Dietary Considerations: Since you have a history of anal fissures, maintaining a diet high in fiber and staying hydrated can help prevent constipation and reduce strain during bowel movements, which can exacerbate anal conditions.

In summary, while your current situation appears stable, it is essential to remain vigilant for any changes. If you experience recurrent symptoms or new concerns, seeking evaluation from a specialist in colorectal surgery would be the next best step. They can provide a comprehensive assessment and guide you on the appropriate management to prevent complications.

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