Autism under age 3 years: a clinical study of 28 cases referred for autistic symptoms in infancy.
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.
Gillberg
C
C
Department of Child & Adolescent Psychiatry, Child Neuropsychiatry Centre, Göteborg, Sweden.
Ehlers
S
S
Schaumann
H
H
Jakobsson
G
G
Dahlgren
S O
SO
Lindblom
R
R
Bågenholm
A
A
Tjuus
T
T
Blidner
E
E
D001321:Autistic Disorder / Q000175:diagnosis* / Q000523:psychology; D002657:Child Development; D002659:Child Development Disorders, Pervasive / Q000175:diagnosis; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008607:Intellectual Disability / Q000175:diagnosis; D007805:Language Development Disorders / Q000175:diagnosis; D008297:Male; D009483:Neuropsychological Tests; D011446:Prospective Studies; D012017:Referral and Consultation; D012189:Retrospective Studies; D015518:Rett Syndrome / Q000175:diagnosis; D012307:Risk Factors; D012931:Social Environment