AUTISM UNDER AGE 3 YEARS - A CLINICAL-STUDY OF 28 CASES REFERRED FOR AUTISTIC SYMPTOMS IN INFANCY

Abstract Twenty‐eight children referred with a preliminary diagnosis of autistic disorder under age 3 yrs were extensively examined from the neuropsychiatric point of view and followed up for several months to several years. A diagnosis of autistic disorder was confirmed in 75% of the cases. A variety of associated medical conditions was identified. It was concluded that autism can be diagnosed in a substantial proportion of cases before age 3 yrs and that the neurobiological background is similar to that seen in older autistic children. Copyright © 1990, Wiley Blackwell. All rights reserved