In about five percent of autism cases, another disorder is also present. Studying this kind of co­occurrence helps researchers who are t...

Researchers and health care providers use the term neural tube defects to describe one important category of birth defects.

Autism is a complex neurobiological disorder of development that lasts throughout a person's life.

Williams Syndrome (WS) is a rare genetic disorder characterized by mild to moderate mental retardation or learning difficulties, a distincti...

There is no cure for Williams syndrome, nor is there a standard course of treatment

Current figures show that autism occurs in all racial, ethnic, and social groups equally, with individuals in one group no more or less like...

Birth defects can be caused by different factors, such as:

Rett syndrome is a complex neurobiological disorder of development in which an infant seems to grow and develop normally at first, but then ...

Down syndrome is a chromosomal condition that is associated with intellectual disability, a characteristic facial appearance, and poor muscl...

Researchers are not certain whether autism is more prevalent now than in the past for a number of reasons.