It is characterized by deficits in social relatedness, deficits in language and communication, and stereotyped and restricted patterns of behavior, and is frequently but not always accompanied by mental retardation. Historical Development of the Concept of Autism II. Asperger’s Disorder is often considered a mild form of Autistic Disorder, and there is still controversy about how distinct it is from autism; diagnostically, it can be distinguished from autism by normal development of language.
The other specific syndromes classified as Pervasive Developmental Disorders include Rett’s Disorder, Asperger’s Disorder, and Childhood Disintegrative Disorder.
The finding raises the question: Could increasing vasopressin levels boost sociability in people with autism?
Monkey study bolsters case for brain hormone’s role in autism This study reveals that autistic boys and the least social members of a troop of rhesus macaques have low brain levels of the hormone vasopressin.
Autistic-like disorders virtually always begin before age 3, while schizophrenic-like disorders virtually never begin before age 7.
Only in the 1970s came an awareness that disorders beginning in infancy must be regarded as separate in kind from those with onset in later childhood, adolescence, or adulthood.
Children with the most severe autism traits are more than three times as likely to be obese as those with milder traits.
Research adds heft to link between autism and obesity Nearly half of American adolescents with autism are overweight or obese, this paper showed, confirming a pattern seen in several other studies.
New approach predicts impact of mild mutations in autism The new method outlined in this paper allows researchers to assess the biological impact of thousands of subtle genetic mutations, each of which alters just one of a protein’s amino acids.
In the second — a stem-cell study — scientists used a modified version of CRISPR to restore expression of the gene mutated in the syndrome.