A small raised bump on the skin, usually filled with pus, that often appears on the face especially during puberty.
From Middle English 'pimpel,' possibly related to Old English 'pipian' (to pipe or whistle). The exact origin is unclear, but it's been used for skin conditions since medieval times.
Pimples happen because during puberty, hormones trigger your skin to produce way more oil—bacteria then grows in those oil-filled pores, and your immune system creates the inflammation we see as a zit!
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