Phenylketonuria in children

Phenylketonuria in children is a more common autosomal recessive disease caused by enzyme defects in the phenylalanine metabolic pathway. Both parents have chromosomal defects, but both are asymptomatic, and the incidence of children of close relatives is high. The child is normal at birth, and after breastfeeding, symptoms usually appear at 3-6 months, and the symptoms are obvious at 1 year old. The disease has been used as one of the routine screening programs for obstetric newborns.

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