Parents are normal, the child may get phenylketonuria.
Phenylketonuria is a common chromosomal recessive disorder in which a genetic abnormality prevents the normal metabolism of phenylalanine, leading to the accumulation of phenylalanine and other metabolites in the body, which can cause a series of clinical manifestations such as mental retardation. A child has a 1 in 4 chance of developing the disease when both chromosomes of the child’s parents carry the gene that causes the disease.
Phenylketonuria is usually detected when the child is 3 to 6 months old, because of the increase in breastfeeding, the concentration of phenylalanine and other metabolites in the blood gradually increases, and the abnormal symptoms are gradually manifested. This can be seen as white skin, light hair color, body fluids that smell like rat urine or mold, and mental retardation. A low phenylalanine diet is the best treatment for phenylketonuria.
If you find that your child has any of the above abnormalities, it is recommended that you go to a regular hospital as soon as possible for a clear diagnosis and treatment under the guidance of a doctor. Self-diagnosis and medication are not recommended to avoid delaying the condition.