Types of perianal and anorectal abscesses
Abscesses around the anus are named after where they form:
- Perianal abscess: the most common type. It sits just under the skin near the anal opening and is usually visible and tender.
- Ischiorectal abscess: forms deeper, in the space beside the rectum, and can cause more swelling in the buttock.
- Intersphincteric abscess: forms between the inner and outer anal sphincter muscles. The pain may be felt inside the anal canal.
- Supralevator abscess: a deeper, less common type above the pelvic floor muscles. It may need specialised drainage.
The type of abscess decides how it is drained and what care you may need later.
What causes a perianal abscess?
Most perianal abscesses start when an anal gland gets blocked. Bacteria grow in the trapped fluid and form pus. Other things that raise the risk include:
- Constipation or hard stools that irritate the area
- Diarrhoea or frequent loose stools
- Crohn's disease or other inflammatory bowel conditions
- Diabetes or low immunity
- Previous anal surgery or injury
In some people, no clear trigger is found. Perianal abscesses are more common in men and usually affect people aged 20 to 60. Along with swelling, you may have pain while passing stools and sometimes rectal bleeding.
Can a perianal abscess lead to an anal fistula?
Yes. The abscess is the sudden infection. A fistula is a small tunnel that can form afterwards, between the inside of the anal canal and the skin. It can cause repeated infections or discharge. About 30 to 50 percent of people with an abscess later develop a fistula. Prompt drainage stops the infection spreading, and follow-up visits help spot a fistula early. If a fistula does form, it needs its own treatment; read about fistula surgery cost in Chennai.
Perianal abscess treatment options in Chennai
| Treatment | How it works | When it is used |
|---|---|---|
| Incision and drainage | A small cut releases the pus and the cavity is cleaned | First treatment for most abscesses |
| Drainage under anaesthesia | Done in the operation theatre for larger or deeper abscesses | Ischiorectal, intersphincteric or complex abscesses |
| Packing or a drain | Helps the cavity heal from the inside out | Selected cases after drainage |
| Antibiotics | Support recovery when infection is spreading or the risk is high | Alongside drainage, not instead of it |
| Fistula treatment (if needed later) | Fistulotomy, seton, LIFT or laser procedures | When a fistula develops after the abscess |
Why choose Unittas Hospital for perianal abscess treatment
- Experienced general surgeons and proctologists who treat anal and rectal conditions
- Prompt incision and drainage when needed
- A careful check for a fistula once the abscess settles
- Day-care or short-stay options for suitable patients
- Clear advice on wound care, sitz baths and recovery
- Support from other specialists if you have diabetes or other health problems
- A discreet, respectful approach for a sensitive condition
A perianal abscess needs drainage to relieve the pain and stop the infection from spreading. Leaving it can lead to a larger abscess or a fistula later. At Unittas Hospital, we make sure you get timely treatment and follow-up. Book a visit with our proctology team in Chennai for treatment that suits how severe your infection is.
Our general and laparoscopic surgeons
Dr. A.M. Kaliraj
MBBS, MS, FIAGES, CCDM
General and Laparoscopic Surgeon
Dr. Giridharan
MS, DNB, FMAS, FIAGES
General and Laparoscopic Surgeon
Frequently asked questions
Is a perianal abscess the same as piles?
No. Piles (haemorrhoids) are swollen blood vessels. An abscess is a collection of pus caused by infection. If you have piles, see our piles treatment.
Can a perianal abscess heal on its own?
It is unlikely. Once pus has formed, it usually needs to be drained. Waiting can let the infection spread.
How painful is the drainage procedure?
Local or general anaesthesia is used, so you do not feel the cut. Mild discomfort afterwards is common and is eased with pain relief and sitz baths.
How long does recovery take after drainage?
Most people feel better within a few days. The wound usually takes a few weeks to heal fully, depending on the size of the abscess.
Will I need packing after the procedure?
Sometimes a light dressing or packing is used for a short time. Your surgeon will advise you based on the wound.
Are antibiotics always given?
Antibiotics are added when the infection is spreading, or if you have fever, diabetes or low immunity. Drainage remains the main treatment.
Can the abscess come back?
It can come back if a fistula develops or the underlying cause is not treated. Follow-up visits help spot this early.
Is the procedure always done in the hospital?
Small abscesses near the skin may be drained under local anaesthesia in a clinic. Larger or deeper ones are usually treated in the operation theatre.
What home care helps after drainage?
Sitz baths (sitting in warm water) help healing. So do keeping the area clean, keeping stools soft with diet or mild laxatives, and taking your prescribed medicines.
When should I seek urgent care?
See a doctor quickly if you have severe pain, swelling that spreads fast, fever, chills, or difficulty passing stools or urine.