This contribution explores how Forrester’s work on cases has opened up an arena that might be called ‘the medical case as a travelling genre’. Although usually focused on the course of disease in an individual patient and authored mostly by one medical author, medical case histories have a social dimension: Once published, they often circulate in networks of scholars. Moreover, scholars of the history of literature have shown that numerous medical cases seem to travel easily beyond the context of medical (...) science into the realm of popular literature and journalism. After tracing the idea of cases travelling in Forrester’s Thinking in Cases, I discuss several contributions by authors who, in the wake of interdisciplinary research on cases in the past two decades, have dealt in different ways with this idea. In the third section, I present my own research on a case of self-crucifixion that was widely discussed in 19th-century Europe. I suggest that understanding the case as a ‘traveling genre’ – an expression borrowed from literary genre theory – highlights the role of readers and publication formats as constitutive for cases, and enables us to see more clearly what cases do for scientists and writers who work with them. (shrink)