Leprosy: a glossary.

Leprosy continues to afflict residents from a number of countries in Africa, South America, and southeast Asia, despite the marked reduction in the number of cases of leprosy worldwide, after the introduction of the multidrug regimens as recommended by the World Health Organization (WHO-MDT). With the increasing immigration of individuals from risk areas to Europe and the United States, knowledge of the basic concepts of leprosy would be helpful to clinicians caring for immigrants in nonendemic areas. We present a comprehensive, updated, and critical glossary of the most relevant terms related to leprosy.