Boils and carbuncles are skin infections caused by a bacteria called staphylococcus aureus (commonly referred to as staph). They present as painful pus-filled pockets, which form under the skin and ...

A painful bump on or around the ear may be a boil, which occurs when a bacterial skin infection develops in a hair follicle or oil gland. Over time, pus collects in the lump. Boil sometimes go away, ...

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