A Child’s Chest Pain for Over a Year: Unexplained Cause

A child has been experiencing chest pain for over a year, accompanied by intermittent dizziness. The child has undergone CT, MRI, ECG, color Doppler ultrasound, and various blood tests, all of which have shown no abnormalities. Despite this, the chest pain persists. Are there more effective methods to determine the cause?
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A Detailed Explanation and Treatment Methods for Phenylketonuria

Phenylketonuria is an amino acid metabolism disorder that primarily affects infants and young children. It is characterized by the inability of phenylalanine to be normally metabolized in the body, leading to its accumulation and potentially causing intellectual disability and other health issues. Treatment primarily involves dietary control to reduce the intake of phenylalanine, and may require rehabilitation training. Currently, there is no surgical treatment method.
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