A brief history of acne
Acne can be difficult to spot because of its many different types. There are two major types, inflammatory and non-inflammatory, and each of them can have its own individual symptoms. The inflammatory type has to do with sebum, which contains bacteria, sebum is produced by the bacteria, so acne is also called bacterial acne. Non-inflammatory acne is the type that is the result of the immune system and/or the chemical changes in the skin that the immune system makes in response to irritation or injury.
Acne has also been called a contagious disease because people with it tend to share their acne with others who have it. An average American has about 5 facial acne breakouts a year. It's possible that you could have acne and have no obvious symptoms, or it could be that the bacteria in your sebum has a different set of characteristics than the bacteria in other parts of your body. How can you diagnose acne? Acne has a number of different names: comedones, cystic acne, acne scarring, comedo, pustules, pustulosis, erythema multiforme, seborrheic dermatitis, and others. A simple skin test is the "Facial Acne Check-up." The test is simple: Take a photo of your face with the lower half of your face facing forward and the upper half facing away. Then use the scale below to read your acne rating.