Autism and Asperger Syndrome Support Group: A comprehensive list of definitions and co-morbid conditions.
Autism and Deafness : A Psychologist's Perspective: Explains the basic concepts and offers individual perspectives.
Down Syndrome and Autism Listserv: This forum invites families, parents and professionals to contribute. Requires registration.
Dual Diagnosis - Downs Syndrome and Autism: Contains resources for parents and carers of children with this diagnosis, often referred to as DS-ASD.
Living With Autism and Deafness: Parent's account of the educational problems their son encountered through his early years.
Savant Syndrome: Wisconsin Medical Society explanation of this rare variant, with FAQ, articles, and resources.
Seizures-Autism: Seizure disorders and Landau-Kleffner syndrome in the autistic population.