Co-morbid Conditions Home>Mental_Health>Disorders>Neurodevelopmental>Autism_Spectrum>Co-morbid Conditions     Web Pages Riverbend Down Syndrome Parent Support Group Site Menu Contains articles about the comorbidity of autism and Down Syndrome. Deaf People with Autism Sometimes, deafness is misdiagnosed as autism and vice versa. Other times, a child will turn out to be both deaf AND autistic. Savant Syndrome A rare, but spectacular, condition in which persons with various developmental disabilities, including Autistic Disorder, have astonishing islands of ability or brilliance that stand in stark, markedly incongruous contrast to the over-all handicap.