Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Valinemia ?
    ### Response:
    Valinemia is a very rare metabolic disorder characterized by abnormally high levels of the amino acid valine in the blood and urine. Infants with valinemia reportedly experience lack of appetite, vomiting, and failure to thrive. In some cases, the condition may be life-threatening.
    