Although symptoms of obsessive-compulsive disorder (OCD) are heterogeneous, considerable advances have been made in subtyping OCD based on factor-analysed symptom dimensions. However, there is very little empirical data on the longitudinal course of symptom dimensions in adult OCD.
University Hospital of Hamburg, Centre of Psychosocial Medicine, Department of Psychiatry and Psychotherapy, Martinistrasse 52, 20246 Hamburg, Germany. michael.rufer@usz.ch