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Abscess
An abscess is a painful collection of pus caused by infection. It can form under the skin or deeper in the body, and usually needs draining as well as antibiotics.
Causes & risk factors
- Bacterial infection (often Staphylococcus)
- A blocked hair follicle or oil gland
- A wound, cut or injection site
- Poor immunity, such as with diabetes
- An infected cyst
Common symptoms
- A painful, swollen lump
- Warmth and redness over the area
- Fever if the infection spreads
- Pus that may drain from the lump
- Swollen nearby glands
Tests & diagnosis
- Clinical examination
- Ultrasound to confirm a fluid collection
- CBC (infection)
- Blood sugar (to check for diabetes)
- Pus culture to guide antibiotics
Treatment & management
- Draining the pus (incision and drainage) is the main treatment
- Antibiotics, especially if infection is spreading or you are unwell
- Warm compresses for small, early abscesses
- Wound packing and dressing changes after drainage
- Control diabetes and treat any underlying cause
When to see a doctor urgently
- A spreading redness, high fever or feeling very unwell — seek urgent care
- A large or deep abscess
- An abscess near the face, spine or groin
- An abscess in someone with diabetes or low immunity
Frequently asked questions
Can I treat an abscess at home?
A tiny early one may settle with warm compresses, but most abscesses need proper draining by a doctor. Do not squeeze it yourself, as that can spread infection.
Do antibiotics alone cure an abscess?
Usually not. Pus needs to be drained; antibiotics support treatment when infection is spreading, but they cannot clear a walled-off collection on their own.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.