Basic Child Psychiatry has been revised again to reflect advances in the field and to ensure that it remains an up-to-date introduction to the subject. Since the publication of the fifth edition, the tenth edition of the World Health Organisation's International Classification of Diseases has appeared. This proposes a number of changes in the classification of child and adolescent psychiatric disorders, and these are fully reflected in this revised edition. As in previous editions, extensive references are provided so that readers can obtain ready access to additional information. An appendix explains the main features of the Children Act for England and Wales 1989.