Psychiatry past and present: do we need history?

Historical evidence can be useful to inform debate about current dilemmas in health service policy. However, concepts of historical analysis may be problematic for doctors, for whom a model of 'history' is often based on clinical history-taking: a clinical history aims to explain the present, whereas a historical analysis aims to elucidate the past. This article discusses and illustrates these concepts, and highlights potential pitfalls of poor historical methodology. It also provides pointers about researching the history of psychiatry in the UK and how to contribute historical evidence to health service policy debates today.Declaration of interestNone.