A cognitive-behavioural analysis of clinical perfectionism has recently been proposed. The aim of this study was to explore the phenomenology of clinical perfectionism and its putative maintaining mechanisms. Of the 21 participants, 15 were judged to have the core psychopathology of clinical perfectionism. The data obtained were largely consistent with the model. In particular, self-imposed dysfunctional standards, continual striving and adverse consequences appeared to be highly salient features of those people who had the core psychopathology of clinical perfectionism but not of those without. A number of other possible maintaining factors not originally described in the model were also identified.