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Feb 2, 2023 · A boil is a contagious skin infection that starts in a hair follicle or oil gland. It causes a red, tender lump that turns white with pus. You can treat it at home by applying warm compresses, using a heating pad, and keeping the area clean. Learn more about the common locations, causes, symptoms, and when to seek medical care for boils.
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Boils
Boils can occur anywhere on your skin, but appear mainly on the face, back of the neck, armpits, thighs and buttocks — hair-bearing areas where you're most likely to sweat or experience friction. Signs and symptoms of a boil usually include:
Carbuncles
A carbuncle is a cluster of boils that form a connected area of infection. Compared with single boils, carbuncles cause a deeper and more severe infection and are more likely to leave a scar. People who have a carbuncle often feel unwell in general and may experience a fever and chills.
You usually can care for a single, small boil yourself. But see your doctor if you have more than one boil at a time or if a boil:
•Occurs on your face or affects your vision
•Worsens rapidly or is extremely painful
•Causes a fever
•Gets bigger despite self-care
•Hasn't healed in two weeks
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Most boils are caused by Staphylococcus aureus, a type of bacterium commonly found on the skin and inside the nose. A bump forms as pus collects under the skin. Boils sometimes develop at sites where the skin has been broken by a small injury or an insect bite, which gives the bacteria easy entry.
Although anyone — including otherwise healthy people — can develop boils or carbuncles, the following factors can increase your risk:
•Close contact with a person who has a staph infection. You're more likely to develop an infection if you live with someone who has a boil or carbuncle.
•Diabetes. This disease can make it more difficult for your body to fight infection, including bacterial infections of your skin.
•Other skin conditions. Because they damage your skin's protective barrier, skin problems, such as acne and eczema, make you more susceptible to boils and carbuncles.
Rarely, bacteria from a boil or carbuncle can enter your bloodstream and travel to other parts of your body. The spreading infection, commonly known as blood poisoning (sepsis), can lead to infections deep within your body, such as your heart (endocarditis) and bone (osteomyelitis).
It's not always possible to prevent boils, especially if you have a weakened immune system. But the following measures may help you avoid staph infections:
•Wash your hands regularly with mild soap. Or use an alcohol-based hand rub often. Careful hand-washing is your best defense against germs.
•Keep wounds covered. Keep cuts and abrasions clean and covered with sterile, dry bandages until they heal.
•Avoid sharing personal items. Don't share towels, sheets, razors, clothing, athletic equipment and other personal items. Staph infections can spread via objects, as well as from person to person. If you have a cut or sore, wash your towels and linens using detergent and hot water with added bleach, and dry them in a hot dryer.
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By Mayo Clinic Staff
Sep 18, 2021 · A boil or carbuncle is a pus-filled skin infection that can be treated by incision and drainage, antibiotics or warm compresses. Learn how to diagnose and treat boils and carbuncles from Mayo Clinic, a trusted source of medical information and advice.
Dec 2, 2022 · Boils are red or purplish bumps on your skin caused by bacteria like Staphylococcus aureus. You can treat them at home with warm compresses, but larger or recurrent boils require medical attention and drainage. Learn how to prevent complications like scarring and secondary infection.
- Diana Wells
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Oct 11, 2021 · A boil is a pus-filled bump that develops in your skin, usually caused by the bacteria Staphylococcus aureus. A carbuncle is a group of boils located in one area of the body. Learn about the symptoms, causes, treatment and prevention of boils and carbuncles from Cleveland Clinic.
A boil, also called a furuncle, is a deep folliculitis, which is an infection of the hair follicle. It is most commonly caused by infection by the bacterium Staphylococcus aureus , resulting in a painful swollen area on the skin caused by an accumulation of pus and dead tissue. [1]
