Deinstitutionalization of young people with intellectual disability means that
they are now cared for by families and served by community-based professionals.
Normalization, which has been the guiding philosophy for this re-integration,
has challenged child psychiatry to accept its responsibility for the mental
health of this special needs group. It is argued that this group, with its
special mental health needs, has had an influence on the conceptual framework of
child psychiatry, particularly our understanding of development. This article
examines the influence of the psychiatry of intellectual disability on child
psychiatry and the influence of child psychiatry on the understanding of the
mental health needs of those with intellectual disability. In particular, the
management of young people with intellectual disability has required child
psychiatry to expand its understanding of a biopsychosocial approach. Some of
the resulting changes and challenges are presented to illustrate the benefits
for both child psychiatry and the psychiatry of intellectual disability. The
interaction of different conceptual biases has led to a new and broader
conceptual spectrum of
developmental neuropsychiatry
. Developmental
neuropsychiatry recognizes the need to integrate social science and preventative
strategies at one end of the spectrum, with the genetics, molecular biology of
human behaviour and targeted pharmacology at the other, and consider the
developmental and interactive nature of such models. This article argues that
this emerging, dynamic and broader conceptual framework of developmental
neuropsychiatry enhances our understanding of the child mental health of all
children. The article looks at some of the implications for assessment,
diagnosis and treatment. As mental health needs become a greater public health
priority, the advances in basic sciences will reinvigorate this medical
specialty and training programmes will need to reflect these.