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.
Blackheads are also common. This form of acne consists of numerous small comedones and inflammatory changes.
Acne conglobata and acne cystic 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.