Voznyak, ISvyatenko, T2013-07-132013-07-132013https://dspace.univ-tlemcen.dz/handle/112/2489Psoriasis-one of the most common skin diseases, according to some authors it suffers from 2 to 10% of the population (around 200 million people), and among patients undergoing inpatient treatment -6.5-22%enArticle