http://www.niams.nih.gov/health%5Finfo/Acne/default.asp
This document also available in Spanish
National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health
General information about acne that includes a description of what acne is and how it develops, the causes of acne, and the treatment options for various forms of acne. Information is also provided on skin care.