Over the last few months we’ve regularly featured pieces taking a critical line on the new Diagnostic and Statistical Manual of Mental Disorders (DSM-5) and on psychiatric diagnosis more generally. We are nonetheless committed to offering a range of views on mental health. Today we feature an article taking a more pro-diagnosis position and offering a (possibly surprising) view on why the DSM is not always relevant to the consideration of distress. The author, Alex Langford, is a psychiatrist with clear views on both the value of diagnosis and the limits of classification schemes. What do you make of what he has to say? Alex has agreed to respond to comments over the next few days.