Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Friedreich ataxia ?
    ### Response:
    Friedreich ataxia is an inherited condition that affects the nervous system and causes movement problems. People with this condition develop impaired muscle coordination (ataxia) that worsens over time. Other features include the gradual loss of strength and sensation in the arms and legs, muscle stiffness (spasticity), and impaired speech.
    