Acne

Whether you call them blemishes, pimples, or zits, most of us experience mild acne at some point in our lives. More often a problem in the teen years, acne vulgaris, as it's known medically, starts when skin pores become blocked by excess oil and dead skin cells. Some people have severe acne resulting in hundreds of pimples across the face, chest, and back, although many treatments can help.