Simply put, acne occurs when your pores get clogged with oil and dead skin cells. This creates a breeding ground for bacteria, which leads to redness and swelling. Experts are still investigating why some people are more prone to developing acne than others, but hormones are thought to play a role.
What’s the difference between acne and pimples?
Acne is a chronic skin condition defined by frequent breakouts and having pimples, whiteheads or blackheads throughout the face. A pimple or two that pops up from time to time is not considered acne. If what you’re seeing does not clear up with an over-the-counter acne treatment, it's a good idea to consult your general doctor or dermatologist.
Sometimes. The excess sebum production that leads to oily skin is known to be a contributing factor to acne, as it can clog pores. But dry skin and sensitive skin types can develop acne, too.