"Razor burn", "razor bump", and "ingrown hair" are all terms for folliculitis, a common skin condition where hair follicles (the tiny openings in the skin that enclose hair) are damaged, and so are at greater risk of inflammation and infection. These openings can become plugged or irritated by sweat, oils, and makeup. Any location of the body which contains hair can be affected and often look like rashes and pimples. The most common areas include the face or scalp, especially in areas where there is repeated irritation from shaving. The thighs and groin can be affected by clothing repeatedly rubbing the area. There is also pityrosporum folliculitis, known as "back acne". For more information, please visit the FAQ.