Acne, hormone-induced inflammation of the sebaceous glands. Acne is a very common condition, especially during puberty and adolescence, but it can persist for years after that. Acne cannot be found in children before they reach puberty. The exception is children in the first months of life, which can get acne because sebaceous glands are more active then than later in childhood.
There are several clinical variants of acne. Acne vulgaris is the most common form and consists of comedones and red nodules with or without pus formation in the skin. Pimples are usually limited to the face and upper chest and back, which is the area that has the largest oil production.
Komedonen is also common. This form of acne consists of numerous small comedones and inflammatory changes.
Acne Cystic and Acne fulminans serious forms of acne, which generate large, deep and liquid with inflammatory changes in the face and / or on the chest and back. It can clear up a lot of pus (this polished is sterile). In addition, it can cause sores and scabs, which can lead to significant scarring when they heal.