Sudden Painful Lump on Back of Head Boil
A boil (furuncle) is a painful skin bump filled with pus. Typically, the cause is staph bacteria that are naturally present on your skin. These bacteria can lead to an infection or inflammation within a hair follicle or oil gland. A fungal infection may also cause some boils.
Boils can appear anywhere on your body. A boil is also called:
- an abscess (if it's large)
- a stye (if it's on the eyelid)
Photography by DermNet New Zealand
Symptoms of a boil
Boils are usually small, but they can be as large as a baseball. They begin as pimples that are red in appearance.
Symptoms include:
- redness
- swelling
- pain
- development of a white or yellow center
- oozing pus or crusting
- fatigue or fever
- general feeling of malaise
Where do boils form?
Staph bacteria normally live on your skin or in your nose. When your skin is scraped or broken, the bacteria can
The hair follicle can be located anywhere on your body. Boils most often are found in skin areas where there's friction, like the:
- neck
- breasts
- face
- armpits
- buttocks
- thighs
It can be easy to confuse boils with carbuncles or cysts, but there are differences.
A carbuncle is simply a few boils grouped together. A cyst, on the other hand, is a smooth, round, closed sac under your skin filled with fluid or semisolid material.
Boils and cysts can both look like bumps on your skin. The main difference between a cyst and a boil is that a boil is a bacterial or fungal infection.
Most cysts are slow-growing and benign (noncancerous), and they aren't contagious. Boils, on the other hand, can spread bacteria or fungi on contact.
The following table gives an overview of the differences between a boil, a cyst, and a carbuncle:
Do not pick at or pop a boil.
Boils can be open sores and drain pus, so if you touch the area with contaminated hands, you risk spreading the bacteria elsewhere or introducing new bacteria into the boil.
Depending on the severity of the boil, a doctor can surgically drain the pus.
Since boils are most commonly caused by an infection by bacteria like staph, the best prevention strategy is to keep good hygiene habits.
In addition to regular hand washing, it's important to clean and cover any cuts and scrapes. Avoid touching other people's cuts or bandages, or sharing personal items that come in contact with the skin like razors or towels.
Cover any exercise equipment during use so you do not touch it directly. Clean and disinfect common surfaces that you touch daily, especially if there are any bodily fluids like blood, urine, or vomit.
It's possible to contract the staph bacteria, which is the most common bacteria to cause a boil. Other bacteria or fungi may also be contagious.
It's best to avoid touching your boil. But if you do, make sure to wash your hands thoroughly beforehand for at least 15 seconds, especially before eating and after using the toilet, exercising, coughing, sneezing, or blowing your nose.
Take care if someone you work with or live with currently has a boil. Wash any towels, toys, or clothing that may have come in contact with the boil. To kill any bacteria or fungi that may be present on these items, use hot water and soap. Dry the items in a dryer using the hot setting.
Most boils heal on their own within 1 to 3 weeks. But if the boil swells or begins to cause you increasing pain, contact a dermatologist for evaluation and treatment.
If another boil appears, or if you suddenly have a fever or vision problems, you should also contact a doctor.
Sudden Painful Lump on Back of Head Boil
Source: https://www.healthline.com/health/cyst-vs-boil
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