Blemishes can happen anywhere there are pores and hair follicles, says O'Brien—meaning they aren't limited to your face, back and chest. Pimples in or near the ear are often caused by residue from hairstyling products. Breakouts can also pop up around your bikini line, either as a result of shaving or constant friction from wearing underwear. Never squeeze a blemish in a sensitive area, and avoid scrubbing, which can irritate acne and make it worse. Instead, use a benzoyl peroxide or salicylic acid wash in the shower, and apply a spot treatment using a cotton swab. If a pimple lasts longer than a week, feels hot or becomes significantly larger (about the size of a nickel), you should get it checked out by a doctor.