Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Central Pontine Myelinolysis ?
    ### Response:
    Central pontine myelinolysis (CPM) is a neurological disorder that most frequently occurs after too rapid medical correction of sodium deficiency (hyponatremia). The rapid rise in sodium concentration is accompanied by the movement of small molecules and pulls water from brain cells.
    