Question

but tell me how to deal with those problems?
Does it need special treatment.​

Answer 1

Answer:

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Answer 2

Phenylketonuria is caused by a gene defect that leads to the formation of phenylalanine hydroxylase. If this enzyme is absent, phenylalanine can not be broken down by the body. This allows phenylalanine to build up in your body. - Symptoms of Phenylketonuria can vary from mild to extreme.