What are the early symptoms of perianal abscess?

Written by Yu Xu Chao
Colorectal Surgery
Updated on April 29, 2025
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The early symptoms of a perianal abscess mainly manifest as a red and swollen lump around the anus, which is noticeably painful to touch, and feels warm. As the lump grows and purulence develops, a fluctuation sensation can be felt upon touching. In severe cases, patients may even experience systemic symptoms such as fever and night sweats.

For a perianal abscess, it is recommended that patients visit the proctology department of a hospital as soon as possible to undergo procedures like incision and drainage of the abscess, or a radical surgery for perianal abscess. Relying solely on medication can delay treatment and cause the abscess to spread further, potentially leading to necrotizing fasciitis or anal fistula.

A perianal abscess is typically caused by an infection of the anal glands, which spreads from inside the anal canal to the surrounding areas. Simple medication treatment cannot eradicate the infection source; therefore, it is advisable to opt for surgical treatment as soon as a perianal abscess is detected.

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Written by Yu Xu Chao
Colorectal Surgery
1min 7sec home-news-image

What are the early symptoms of perianal abscess?

The early symptoms of a perianal abscess mainly manifest as a red and swollen lump around the anus, which is noticeably painful to touch, and feels warm. As the lump grows and purulence develops, a fluctuation sensation can be felt upon touching. In severe cases, patients may even experience systemic symptoms such as fever and night sweats. For a perianal abscess, it is recommended that patients visit the proctology department of a hospital as soon as possible to undergo procedures like incision and drainage of the abscess, or a radical surgery for perianal abscess. Relying solely on medication can delay treatment and cause the abscess to spread further, potentially leading to necrotizing fasciitis or anal fistula. A perianal abscess is typically caused by an infection of the anal glands, which spreads from inside the anal canal to the surrounding areas. Simple medication treatment cannot eradicate the infection source; therefore, it is advisable to opt for surgical treatment as soon as a perianal abscess is detected.

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Written by Li Jiao Yan
Neonatology
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Can a perianal abscess in children heal by itself?

Although they are all perianal abscesses, each child's condition is different. The size of the perianal abscesses varies; some are as small as a grain of rice and may heal on their own, but there are also larger ones the size of a walnut, or even cause the entire buttock area to become swollen and red. Such cases require hospitalization, especially for younger children who also exhibit systemic symptoms like fever. They generally require hospital treatment. Meanwhile, it is recommended that parents take good care of the baby's perianal area, maintain a healthy diet and bowel habits, avoid diarrhea and constipation, ensure cleanliness around the anal area, and use soft, non-irritating wet wipes when cleaning the area to avoid friction injuries that could lead to infections, as the skin of small infants is very delicate.

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Written by Chen Tian Jing
Colorectal Surgery
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Can a perianal abscess be completely cured?

The primary cause of perianal abscesses is the repeated inflammatory stimulation near the dentate line of the anus, leading to infection. As the infection worsens, localized foci of infection form, resulting in the formation of pus and abscesses. Once a perianal abscess has formed, the patient will experience severe pain and will require prompt surgical treatment. If a definitive one-time surgery for the perianal abscess is chosen, it can be completely treated. Post-surgery, simply changing the dressing on the local wound will suffice, and the wound is expected to fully heal and recover. However, if an incision and drainage surgery was performed for the perianal abscess, a fistula may have already formed, requiring a second surgery for cutting and threading the fistula.

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Written by Chen Tian Jing
Colorectal Surgery
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Early symptoms of perianal abscess

When perianal abscesses occur, there are usually significant triggers, most commonly seen after acute diarrhea or when a patient's immunity has recently declined. In the early stages of a perianal abscess, there are sudden symptoms of localized swelling and pain around the anus, accompanied by a sensation of heaviness. As the local abscess cavity enlarges and the infection worsens, the patient may also experience general weakness, fever, and even a decrease in appetite. During the acute phase of a perianal abscess, due to severe local pain, patients are unable to carry on with normal life activities, including sitting and walking. The pain may further involve pelvic muscles and nerves, leading to difficulties with defecation and urinary retention.

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Written by Chen Tian Jing
Colorectal Surgery
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Why does a perianal abscess recur?

Perianal abscess is an infectious disease of the local skin and tissues around the anus caused by an infection in the anal crypts. If a perianal abscess is not treated with a definitive one-time surgical intervention, it is very likely to recur, or after rupture of the abscess, to form an anal fistula with long-term intermittent discharge of pus from an external opening. Therefore, during the acute phase of a perianal abscess, once a distinct abscess cavity and pus formation occurs, it is necessary to promptly perform a one-time definitive surgical treatment of the perianal abscess, rather than choosing conservative medication treatment or simple incision and drainage. The above treatments only temporarily alleviate symptoms of a perianal abscess; only a one-time definitive surgery that completely cleans the local wound can result in the complete healing of the perianal abscess.