21. Dermal leishmaniasis. The patient (above, right) shows lesions of disseminated leishmaniasis which resemble some forms of multibacillary (MB) leprosy. The patient (below, left) shows nodular lesions of post-kala-azar dermal leishmaniasis (PKDL), which may also be mistaken for leprosy. Leishmaniasis has a markedly regional distribution worldwide. It is a good example of the importance of finding out which conditions, in your own area or country, actually give rise to diagnostic problems in practice.