Acne is one of the most common skin diseases and can also cause scars, which can leave permanent marks on the skin. Eight out of 10 people experience it at some point in their life, and even if it often peaks in the teen years, acne can also persist into adulthood.
It is defined as a chronic inflammatory disease of the hair follicles and sebaceous glands present in the skin, characterised by non-inflammatory and inflammatory lesions. These individual lesions have different names depending on their characteristics. You can read more about them here.
Acne is classified depending on its severity, being mild, moderate or severe.
Learn more about acne classification