Definition:
Phenylketonuria (PKU) is a rare genetic disorder characterized by the inability of the body to process an amino acid called phenylalanine. This results in a buildup of phenylalanine in the blood, which can cause intellectual disability and other serious health problems if left untreated.
Causes:
PKU is caused by a defect in the gene that helps create the enzyme necessary for breaking down phenylalanine. This defect leads to a deficiency or absence of the enzyme, causing phenylalanine to accumulate in the body.
Symptoms:
The symptoms of PKU can vary from mild to severe. Common symptoms include:
- Mental retardation or intellectual disability
- Delayed development
- Behavioral problems
- Seizures
- Skin rashes
- Musty odor in the breath, skin, or urine
Treatment:
PKU is typically managed through a strict diet that limits the intake of phenylalanine. This diet includes specially formulated low-protein foods and requires ongoing monitoring of phenylalanine levels in the blood. In some cases, medication may be prescribed to help lower phenylalanine levels.
Long-term Outlook:
Early diagnosis and treatment of PKU can significantly improve outcomes. With proper management and adherence to the recommended diet, individuals with PKU can lead healthy lives and prevent complications associated with high phenylalanine levels.