Home > Medical > Acne > Anatomy of acne Anatomy of acne All sections in Acne » About Acne » Acne and Hormones » Anatomy of Acne » Health Tips » Myths and Facts » Acne News » Psychological Effects » Skincare » Treatment What causes acne? Learn more about the anatomy of acne vulgaris and find out what causes pimples to occur, commonly during puberty, adolescence and young adulthood. Prevalence and course of acne About 90% of all teenagers get acne, while 20% of all cases are adults. Acne is not limited to teenagers. What is sebum? Sebum is a fatty substance secreted by the sebaceous glands in the skin. It consists mainly of fatty acids, waxes, triglycerides and cholesterol. Types of acne Acne is acne right? Wrong. You should be able to classify your own type of acne in order to treat it. Anatomy of the skin Your skin: amazing stuff. Tough, yet sensitive, permeable, yet waterproof. It’s flexible, yet strong, considering that it’s very thin. How a pimple is born There are four factors in the development (pathogenesis) of acne. Incidence of Acne Here are some interesting facts and statistics about the incidence of acne. What do all these acne terms mean? The correct name for common acne is acne vulgaris. The term “vulgaris” means “common or usual”. What is the medical term for blackheads, pimples and other words often used? load more From our sponsor Discover treatments that can help reduce acne What can I do to reduce or remove acne marks?