Intellectual disability is a disorder characterized by cognitive delays. Get the facts from WebMD about its symptoms, causes, and treatments.

The nation's pediatricians are getting new guidelines for how to go about evaluating children who present with global ...

Despite dramatic declines in children's blood lead concentrations and a lowering of the Centers for Disease Control and Prevention's level of concern to 10 μg per deciliter (0.483 μmol per liter ...

More than 10% of boys have been diagnosed with an intellectual disability, autism or another developmental delay.

Senate Majority Leader Chuck Schumer has apologized for calling children with intellectual disabilities “retarded” after receiving criticism for using the term, which is medically outdated and ...

Hearing “You’ve got a big head” might not sound like the nicest comment, but science suggests it could be linked to something positive-intelligence. Research from the UK Biobank, an extensive ...

A newly identified neurodevelopmental disorder may explain tens of thousands of cases of intellectual disability whose cause was previously unknown.

Biologist Jean Piaget developed a theory about the phases of normal intellectual development from infancy to adulthood.

A new national study reveals that most Medicaid-enrolled children with autism spectrum disorder (ASD) or intellectual disability (ID) are not receiving recommended genetic testing despite clinical ...

A new program that will offer much-needed services to those with intellectual and developmental disabilities was launched Wednesday morning in Jacksonville.