Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Neuroacanthocytosis ?
    ### Response:
    Neuroacanthocytosis (NA) refers to a group of genetic disorders that are characterized by misshapen, spiny red blood cells (acanthocytosis) and neurological abnormalities, especially movement disorders. The onset, severity and specific physical findings vary depending upon the specific type of NA present.
    