How bad can acne get?

Acne can range in severity from mild to severe. Mild acne is characterized by occasional pimples or blackheads on the face, chest, and back. Moderate acne is characterized by more frequent and severe pimples or blackheads, as well as some cysts and nodules. Severe acne is characterized by widespread and severe pimples, blackheads, cysts, and nodules, which can cover large areas of the face, chest, and back. In some cases, severe acne can also cause scarring.