Post-kala-azar dermal leishmaniasis: a case report strikingly resembling lepromatous leprosy.

An adult man with post-kala-azar dermal leishmaniasis who had lessons distributed in a manner strikingly similar to lepromatous leprosy is described. He was mistakenly treated with multidrug therapy as recommended by the WHO Expert Committee on leprosy. All investigations including slit-skin smears, histopathology, culture for Leishmania donovani and an indirect fluorescent antibody test to confirm post-kala-azar dermal leishmaniasis proved futile. The diagnosis was ultimately based on the previous history of kala-azar, the absence of other disorders which were ruled out by relevant laboratory tests and the good therapeutic response to sodium antimony gluconate. The epidemiological significance of this case and the salient points to distinguish this condition from leprosy are discussed.