Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Andermann syndrome ?
    ### Response:
    Andermann syndrome is a disorder that damages the nerves used for muscle movement and sensation (motor and sensory neuropathy). Absence (agenesis) or malformation of the tissue connecting the left and right halves of the brain (corpus callosum) also occurs in most people with this disorder.
    