Not-knowing and the proliferation of assumptions: local explanations of Cutaneous Leishmaniasis in Suriname.

Why do patients and others confronted with cutaneous leishmaniasis (CL) - a parasitic skin disease - in the hinterland of Suriname, South America, provide a dazzling variety of aetiological explanations for one single illness? And how do these explanations reflect local knowledge of and interest in the origin of illness? In this article, we explore these questions using the concept of 'not-knowing', as introduced by Murray Last in 1981. One of Last's conclusions is that 'don't knows' or 'don't cares' reflect people's disinterest in medicine. The aim of this article, however, is to draw attention to another aspect of not-knowing: it may lead to a proliferation of explanatory assumptions, unhindered by precise knowledge. In other words, multiple explanations mask not-knowing, which is from a methodological point of view a rarely observed element in social science research and constitutes an important addition to Murray Last's well known argument. The paper describes findings based on anthropological fieldwork carried out between September 2009 and December 2010 at the Dermatology Service in Suriname's capital Paramaribo and among 205 CL patients and 321 inhabitants in various communities in the hinterland. As this article shows, both knowing and not-knowing are rooted in the various contexts of people's daily lives and reflect their historical, socio-cultural, occupational, educational, biological, environmental, and public health-related conditions. Public health authorities should explore not-knowing more seriously in their efforts to prevent illness, since knowing about not-knowing is valuable in the design of health education and prevention programmes.