Autism is a pervasive developmental disorder that begins early in an individual’s life, resulting in symptoms such as social isolation, self-preoccupation, focus on object parts, stereotyped behaviors, and/or restricted speech.  Some individuals with autism are dually-diagnosed with intellectual disability (others do not possess ID).  Additionally, autistic-disorders exist on a continuum, from extreme social isolation & preoccupation to more mild symptoms.  A psychologist typically is the professional who formally diagnoses autism, in accordance with DSM-5 criteria.  Psychologists also become involved with cases where a differential diagnosis is warranted (i.e., attempting to make finer delineations between an autistic  and a related or comorbid disorder).  In Ohio, persons with autism typically are served by the local board of developmental disabilities.