Disorders, often caused by genetic or chromosomal defects, but also by perinatal brain damage as in the case of cerebral palsy, that lead to abnormal development. The resulting disorder can be general or affect different aspects of behaviour to different degrees. Well-known developmental disorders are Asperger’s syndrome, autism, Down’s syndrome, the fragile X syndrome and Williams syndrome.
See Asperger’s syndrome, Autism, Cerebral palsy, Co-morbidity, Congenital anomalies, Congenital abnormalities, Developmental delay, Disability, Disorder, Down’s syndrome, Fragile X syndrome, Learning disability, Minor neurological dysfunction (MND), Neurodevelopmental disorder, Neurological ‘soft; signs, Williams syndrome