Autism and autism spectrum disorder is a general term used for a group of complex brain developmental disorders. Although case sensitive, autism is characterized in varying degrees by difficulties in social interactions, communication associated with abnormal repetitive behavior. The disease is as well integrated with intellectual disabilities, difficulties in motor coordination, attention, etc. Many of the diseases, that fall under the same category of autism are classic autism, Rett syndrome, childhood disintegrative disorder, pervasive developmental disorder, and Asperger syndrome.