Though many of the ethical issues important in adult mental health are of relevance in the child, there are a considerable number of issues special to children. Many of the dilemmas faced pertain to diagnosis, treatment, the protection of the child, as well as the child’s own developing intelligence and moral judgement. In addition, there are cases where the interests of the parents may conflict with the interests of the child. For example, the interests of a mother with schizophrenia might best be served by her continuing to look after her child, but the child’s interests might require that a substitute placement be found. Diagnostic Dilemmas in Child and Adolescent Psychiatry is the first in the IPPP series to explore this highly complex topic. It brings together a collection of clinicians and philosophers who consider a range of topics central to the diagnosis and treatment of children and adolescents affected by mental disorders.