Psychopathology lies at the centre of effective psychiatric practice and mental health care, and Fish’s Clinical Psychopathology has shaped the training and clinical practice of psychiatrists for over fifty years. The 4th edition of this modern classic presents the clinical descriptions and psychopathological insights of Fish’s to a new generation of students and practitioners. It includes recent revisions of diagnostic classification systems, as well as new chapters that consider the controversies of classifying psychiatric disorder and the fundamental role and uses of psychopathology.