In Finland around 2–3% of the population (100 000-150 000 people) suffer from psoriasis. About 3-5% of psoriasis cases are severe. Psoriasis is not contagious. The World Health Organizations (WHO) passed a resolution on psoriasis in May 2014 which recognized psoriasis alongside other serious incurable chronic diseases such as diabetes and cardiovascular disease. According to the resolution, psoriasis is a chronic, noncommunicable, painful, disfiguring, and disabling disease for which there is no cure. Dr Tapio Rantanen MD, Dermatologist is the expert physician for the ‘About psoriasis’ pages on this site.