http://www.ninds.nih.gov/disorders/asperger/detail_asperger.htm
National Institute of Neurological Disorders and Stroke, National Institutes of Health
Asperger Syndrome (AS) is an autism spectrum disorder (ASD), one of a distinct group of neurological conditions characterized by a greater or lesser degree of impairment in language and communication skills, as well as repetitive or restrictive patterns of thought and behavior.