The classification of mental disorder: A simpler system for DSM-V and ICD-11

Abstract

This article proposes a simplification to the chapter structure of current classifications of mental disorder, which cause unnecessary estimates of 'comorbidity' and pay major attention to symptom similarity as a criterion for deciding on groupings. A simpler system, taking account of recent developments in aetiology, is proposed. There is at present no simple solution to the problems posed by the structure of our classification, but the advantages as well as the shortcomings of changing our approach to diagnosis are discussed.