How to find the internal opening of a perianal abscess?

Written by Chen Tian Jing
Colorectal Surgery
Updated on September 03, 2024
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The internal opening of a perianal abscess is mainly identified through digital rectal examination and with the aid of a probe and perianal ultrasonography. Typically, during the onset of a perianal abscess, there is noticeable redness, swelling, heat, and pain around the anus. Inside the anal canal, digital rectal examination and anoscopy reveal swollen mucosa at the anal crypt, accompanied by the discharge of pus. Using a probe for exploration can clearly identify the presence of the internal opening locally. Once the internal opening of a perianal abscess is located, prompt surgical treatment is necessary. Surgery for perianal abscesses generally involves a one-time radical procedure complemented by incision and drainage. If an internal opening exists and involves the sphincter, further surgery involving incision, drainage, and seton placement may be required.

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Written by Chen Tian Jing
Colorectal Surgery
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Can you drink alcohol with a perianal abscess?

Patients with perianal abscess should not drink alcohol. Long-term or excessive alcohol consumption, due to the effects of evaporation or sublimation, can cause local congestion and edema at the anus, and may also increase the risk of infection. As perianal abscess is a local infectious disease of the anus, not only should alcohol be avoided during the acute phase, but prompt surgical treatment is also necessary. If a patient with a perianal abscess does not undergo timely surgical intervention, the pus cavity may expand and the abscess may further spread and rupture, potentially forming an anal fistula. Excessive drinking could lead to worsened local inflammatory symptoms, resulting in an increase in pus and possibly enhancing pain or infection, leading to a more extensive infection in the anal area. Therefore, patients with a perianal abscess should not consume alcohol.

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Written by Chen Tian Jing
Colorectal Surgery
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Which department should I go to for perianal abscess?

During the acute phase of a perianal abscess, patients experience significant local redness, swelling, heat, and pain around the anus. The pain is severe and in some cases, patients are unable to sit or walk normally due to the discomfort. During this acute phase, the swelling of the skin around the anus can easily be confused with skin carbuncles, leading patients to mistakenly visit a dermatologist. However, a perianal abscess is a local anal disease that requires registration with a colorectal surgery department, as it is not merely a skin carbuncle but an infection caused by an infection at the anal crypts inside the anal canal. This necessitates prompt surgical incision and drainage, and, if a fistula has formed, a fistulotomy may also be necessary.

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Colorectal Surgery
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What should I do if there is pus draining from a perianal abscess?

When a perianal abscess occurs, there is typically pus or an enclosed abscess under the skin. If the perianal abscess ruptures and drains pus, it may have developed into an anal fistula. Once a perianal abscess forms an anal fistula, surgical treatment should be carried out as soon as possible. The surgical methods for treating perianal abscesses and anal fistulas mainly include incision drainage debridement surgery and incision with seton placement. After the surgery, due to substantial secretion from the local wound, it is essential to disinfect and change dressings regularly and to monitor the wound daily. It is crucial to prevent excessive granulation or pseudohealing at the local site, which could encapsulate the infection and prevent complete recovery, potentially leading to recurrence in the future.

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Written by Chen Tian Jing
Colorectal Surgery
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Can a perianal abscess heal by itself?

During the acute phase of a perianal abscess, there is significant local redness, swelling, heat, and pain around the anus. Generally, this condition is caused by an infection of the anal crypts, and the possibility of self-healing is very low, so the main treatment for a perianal abscess is surgery. The surgical approach usually involves incision and drainage of the perianal abscess, combined with a one-time curative surgery. If the abscess ruptures and forms an anal fistula, surgical treatment is also required. During the outbreak of a perianal abscess, due to the severe local pain, it is advisable to undergo surgery as soon as possible to prevent further spread of the abscess. Simple topical medications can only relieve the symptoms of local inflammatory infection and cannot achieve a cure.

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Written by Chen Tian Jing
Colorectal Surgery
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What will happen if a perianal abscess is not treated?

Perianal abscesses are localized abscess formations that occur due to repeated infections in the anal crypts. Typically, under perianal ultrasonography, clear pus chambers and related structures can be observed. If perianal abscesses are not treated promptly, there is a high likelihood of expansion of the local pus chambers and dispersion of the pus, leading to an increase in the size of local anal abscesses, which might involve the sacrococcygeal area or the intersphincteric space. The primary treatment for perianal abscesses is surgical, mainly through incision and drainage to evacuate the pus, followed by thorough debridement of the local wound. Additionally, if there are changes in the local sphincter, thread-lifting therapy may also be performed.