Viruses, neurodevelopmental disorder and childhood psychosis.

Four cases are described of prepubertal boys in whom the convergence of neurodevelopmental disorder, viral infection and psychosis seemed more than coincidental. Review of the literature highlights the possibility that viral infection of the central nervous system may play a contributory role in childhood psychosis. Whilst it is essential to avoid a reductionist stance when investigating these difficult conditions, the emergence of potent anti-viral treatments and sophisticated methods of identifying the presence of viral infection should encourage us to consider more carefully the relevance of viruses in childhood psychosis.