An incidence of nine cases, or 20 per cent of a group of 45 phenylketonuric children showing autistic behaviour patterns has been reported. Most of these children have tended to lose the autistic behaviour patterns over time without psychotherapeutic intervention. The question of etiology and factors affecting the course of their development has been raised.
References
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BjornsonJ.: Behavior in Phenylketonuria.Arch. Gen. Psychiat.10: 65–70, 1964.
2.
CenterwallW. R., CenterwallS. A., ArmonV., and MannL. B.: Phenylketonuria II. Results of treatment of infants and young children.J. Pediat.59: 102–118, 1961.