This is also called furuncle . It is a hair follicle infection caused by staphylococcus aureus . It starts with painful indurated swelling with surrounding oedema .After about 1-2 days ,softening occurs in the centre & pustule develops which bursts spontaneously discharging pus . Furuncle of the external auditory meatus is a very painful condition because of the rich nerve supply of the skin . Pain is also due to dense adherence of skin to the perichondrium .
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