It looks like autism: caution in diagnosis.
Snyder
David M
DM
Department of Pediatrics, University of California San Francisco School of Medicine, USA.
Miller
Karen
K
Stein
Martin T
MT
D001321:Autistic Disorder / Q000175:diagnosis*; D002675:Child, Preschool; D003937:Diagnosis, Differential; D006801:Humans; D007398:Interpersonal Relations; D008297:Male; D010379:Peer Group; D012720:Severity of Illness Index; D012918:Social Alienation; D014705:Verbal Behavior