The White Plague (Czech: Bílá nemoc) is a play written by Czech novelist Karel Čapek in 1937. Written at a time of increasing threat from Nazi Germany to Czechoslovakia, it portrays a human response to a tense, prewar situation in an unnamed country that greatly resembles Germany with one extra addition: an uncurable white disease, a form of leprosy, is selectively killing off people older than 45. It was adapted as the film Skeleton on Horseback by Hugo Haas.