[Phenylketonuria. Treatment and developmental control].

We evaluated annually the compliance of dietary restriction, weight, height, head circumference EEG and IQ score on 16 children with phenylketonuria comparing the children diagnosed early with those later. The compliance was good in children treated early and bad in the others. Height and head circumference was normal in all children and we found a tendency towards obesity in the older ones. The IQ score was lower than 80 in 77% of the children diagnosed later and in those the EEG showed slow basal activity in 55%.