Psoriasis is an autoimmune disease. What is an autoimmune disease?
Not too long ago, psoriasis was considered mainly a disease in which excessive skin overgrowth led to thick plaques. Over the last decade, it has become clear that the overgrowth of skin that causes typical psoriasis plaques is due to a faulty immune process. Autoimmune diseases are characterized by an overzealous immune response. In the case of psoriasis, we know that there are certain immune regulators called cytokines that are excessively produced. It is this overactivity of the immune system that causes the inflammation, which ultimately appears as the characteristic signs and symptoms of psoriasis.