Semantic-pragmatic disorder is very similar to Asperger Syndrome and a common characteristic of people with non-verbal learning disabilities and hyperlexia.

The condition involves deficits in social and nonverbal communication such as the give and take of communication as well as interpreting cues from body language and expression.

While Semantic-Pragmatic Disorder itself is almost always milder than Asperger's, the vast majority of people with Asperger Syndrome have pragmatic language deficits and could benefit from the techniques for dealing with this disorder.

Semantic-Pragmatic Disorder may be a variant PDD or it may be just a descriptive term for the language impairment in autistic spectrum disorders.