leprophilia
/ˌlɛprə(ʊ)ˈfɪlɪə/noun
1 Medicine. The desire to have leprosy, or the feigning of leprosy. Now rare.
2A strong desire to care for people with leprosy; attraction to or fascination with leprosy.
Origin
1950s; earliest use found in Revista Brasileira de Leprologia. From lepro- + -philia.