An abscess is an accumulation of pus, usually caused by a bacterial infection. A bacterial infection may lead to an abscess in several ways. For example, using a contaminated needle can introduce ...

Almost 90% of all anal abscesses are caused by blocked glands that become infected. The most common type of anal abscess is a perianal abscess, which typically appears as a painful swelling near the ...

A peritonsillar abscess is a bacterial infection that usually begins as a complication of untreated strep throat or tonsillitis. A pus-filled pocket forms near one of your tonsils. It can cause pain ...

An abscess occurs when an infection causes a pocket of pus to develop. Abscesses can develop on the skin, in the mouth, or inside the body. Bacterial infections typically cause abscesses. Pus develops ...

A skin abscess is a bump within or below the skin’s surface. It is usually full of pus, painful, and may feel thick and swollen. This is typically caused by a bacterial infection. A skin abscess may ...

A boil, or skin abscess, is a localized infection deep in the skin. A boil generally starts as a reddened, tender area. Over time, the area becomes firm and hard. Eventually, the center of the abscess ...

A tooth abscess or a periapical abscess to be more precise is an infection that affects the tooth and may also affect the gums. Toothaches are always painful and especially a tooth abscess can be ...

A brain abscess is a localized collection of pus in the brain, often resulting from infections in nearby areas like the sinuses or ears. The classic triad of symptoms—fever, headache, and focal ...

A peritonsillar abscess forms in the tissues of the throat next to one of the tonsils. An abscess is a collection of pus that forms near an area of infected skin or other soft tissue. The abscess can ...