A boil is a type of skin infection that begins in a hair follicle. Since the entire body is covered in hair, it is possible for a boil to form almost anywhere, although they are more common in exposed areas. When a boil begins to develop, the skin will first turn red, and then a lump will form. After about four to seven days, pus collecting in the lump will make it white. There are many causes of boils, ranging from mild to severe.
A vast majority of boils are caused by a germ that is known as staphylococcal bacteria, known as staph for short. All people have the staph germ on their body, but it is only able to enter the body if there is a cut or nick in the skin. It can also travel down the hair on your body to the follicle and cause an infection. Thus, it is best to treat this type of boil with antibiotics or an oral steroid.
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