Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Ataxia Telangiectasia ?
    ### Response:
    Ataxia-telangiectasia is a rare, childhood neurological disorder that causes degeneration in the part of the brain that controls motor movements and speech. The first signs of the disease are unsteady walking and slurred speech, usually occurring during the first five years of life.
    