Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) neuroferritinopathy ?
    ### Response:
    Neuroferritinopathy is a disorder in which iron gradually accumulates in the brain. Certain brain regions that help control movement (basal ganglia) are particularly affected. People with neuroferritinopathy have progressive problems with movement that begin at about age 40.
    