Acne is a common skin condition characterized by the appearance of pimples, blackheads, and whiteheads. It occurs when hair follicles become clogged with oil, dead skin cells, and bacteria, leading to inflammation. Acne typically affects the face, neck, chest, and back, and can be influenced by hormonal changes, genetics, and certain lifestyle factors. Treatment options vary and may include topical creams, oral medications, and changes in skincare routines.