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Health condition

Boils and abscesses

A boil is a deep infection of a hair follicle and an abscess is a larger collection of pus; both are usually caused by Staphylococcus aureus, and recurrent ones need investigation.

Key points

What matters most, at a glance.

The essentials in plain English - symptoms, when to seek help, who to see and what treatment looks like.

  • A hot, tender, swelling lump that comes to a head over days

  • Large or fluctuant abscesses need incision and drainage, not just antibiotics

  • Fever, spreading redness or rapid worsening needs urgent medical attention

  • Specialist: a consultant dermatologist for recurrent boils, to look for causes such as staphylococcal carriage, diabetes or hidradenitis

Understanding it

About Boils and abscesses, and what to do next.

Boils start when bacteria, usually Staphylococcus aureus, infect a hair follicle, producing a painful red lump that enlarges and often points to a pus-filled head; several adjacent follicles can merge into a carbuncle, and any deeper walled-off collection is an abscess. Warm compresses encourage small boils to drain on their own, but squeezing them is counterproductive.

An established abscess needs a small incision and drainage, sometimes with antibiotics if there is surrounding cellulitis or fever. Recurrent crops of boils justify swabs for staphylococcal carriage, a diabetes check and a look at whether the true diagnosis is hidradenitis suppurativa. Most people start with their GP, who can refer to a consultant dermatologist. In many parts of the UK, routine NHS referrals for this kind of problem currently take 20-45+ weeks depending on where you live, whereas an initial appointment with a private consultant is typically available within around two weeks.

A quiet reminder

This guide is for information, not medical advice.

Your GP knows your history and can tell you which parts apply to you. If in doubt, see them.

Frequently asked

Common questions about Boils and abscesses.

Quick, plain-English answers to what people ask us most.

  • What is boils and abscesses?

    Boils and abscesses is an infection that develops when bacteria, viruses or other organisms invade the affected tissue and trigger inflammation. Severity varies widely, from a mild, self-limiting illness to a more serious infection that needs prompt treatment. The specific organism responsible, and how quickly it is identified, has a big influence on the best treatment.

  • What causes boils and abscesses?

    Boils and abscesses is caused by an infectious organism, which may be bacterial, viral or fungal depending on the specific condition. It can spread through close contact, contaminated surfaces, insect bites, or from another site of infection in the body. People with a weakened immune system, chronic illness or certain risk factors are generally more susceptible.

  • What are the symptoms of boils and abscesses?

    Symptoms of boils and abscesses vary from person to person and depend on how severe the condition is and which structures are affected. Some people notice symptoms gradually over weeks or months, while others experience a more sudden onset. Because symptoms can overlap with other conditions, a proper assessment is important to reach an accurate diagnosis rather than relying on symptoms alone.

  • Is boils and abscesses serious or dangerous?

    Most cases of boils and abscesses are manageable, especially when identified and treated early, but severity varies from mild and self-limiting to more significant, depending on individual circumstances. Left unassessed, some cases can lead to complications or a longer-term impact on daily life. If you are worried about your symptoms, it is always worth getting them checked rather than waiting.

  • Is boils and abscesses contagious or can it come back?

    Whether boils and abscesses can be passed on or can recur depends on the specific cause and how well any underlying trigger is managed. Some cases are a one-off, while others can flare again if you are re-exposed to the same trigger or organism. Your clinician can advise on the specific risk of recurrence in your case and any steps that reduce it.

  • Can boils and abscesses be cured, reversed or prevented?

    Outlook varies with boils and abscesses: some cases resolve completely with treatment, others improve significantly but need ongoing management, and a smaller number become a long-term condition to be controlled rather than cured. Prevention strategies, such as addressing modifiable risk factors, can reduce your chances of developing it or of it recurring, but cannot guarantee against it in every case.

  • How is boils and abscesses treated?

    Treatment for boils and abscesses is tailored to the individual and depends on severity, underlying cause and personal circumstances. Options can range from simple lifestyle measures, monitoring and conservative treatment through to medication, specialist procedures or surgery in more significant cases. A specialist assessment helps identify which combination of treatments is most appropriate for you.

  • How long does boils and abscesses last?

    The duration of boils and abscesses varies considerably: some people recover within days or weeks, while others live with a more persistent or recurring condition that needs ongoing management. Response to treatment, how early it is started, and individual factors all influence the timescale. Your clinician can give you a more personalised estimate once your specific circumstances are known.

  • When is surgery needed for boils and abscesses?

    Surgery is not usually the first option for boils and abscesses and is generally reserved for cases where conservative treatment has not worked, symptoms are severe, or there is a significant structural problem that needs to be corrected directly. The decision depends on your specific findings, symptoms and how they are affecting your life. A specialist consultation is the best way to establish whether surgery is being considered too early, or should be considered sooner rather than later.

  • When should I see a doctor about boils and abscesses, and how quickly can I be seen privately?

    It is worth seeing a doctor about boils and abscesses if symptoms are persistent, getting worse, or affecting your daily life, rather than waiting to see if they settle on their own. NHS routine referrals to a specialist can currently take anywhere from around 20 to 45 weeks or more depending on your area, whereas a private consultant can typically see you within about 2 weeks. Getting an earlier assessment can help clarify the diagnosis and start the right treatment sooner.