It is the infection and inflammation of one or more hair follicles by staphylococci. The condition may occur anywhere on the skin with the exception of the palms of the hands and soles of the feet.
Pimples or pustules around a hair follicle
Your doctor will check your skin and ask about your health and activities. He or she may do tests to find out what is causing your folliculitis and to make sure you don't have a different problem, such as impetigo or heat rash. Testing a sample of the fluid in the pimples or a sample of tissue can help your doctor learn what is causing the infection.
Hidradenitis (Infection of group of hair follicles).
Boil in dangerous zone can cause cavernous sinus thrombosis.