"Lazarinus" . Of Saint Lazarus, in the Catholic faith, patron saint of the poor, the sick and lepers. 1 . Adjective. Leper, who suffers from the "disease of St. Lazarus" or "leprosy". Leprosy is an infection caused by the bacterium "Mycobacterium leprae", also known as "Hansen's" bacillus, which mainly affects the skin, peripheral nerves, mucosa of the upper respiratory tract and eyes.