Newly revised and updated, this is the definitive reference work on psychiatric terminology. It encompasses new information that has arisen from research advances, social changes, legal developments and educational innovations since the appearance of the fifth edition in 1981. Many new terms have been added from the study of agoraphobia and panic disorder; sleep, speech, and eating disorders; depression; disorders in cognitive functioning; and particularly from neuroscience and psychopharmacology. The result is an authoritative reference that offers encyclopaedic, up-to-date coverage of all areas of psychiatric interest. It will be welcomed by all professionals and students in the field of mental health.