Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Lafora progressive myoclonus epilepsy ?
    ### Response:
    Lafora progressive myoclonus epilepsy is a brain disorder characterized by recurrent seizures (epilepsy) and a decline in intellectual function. The signs and symptoms of the disorder usually appear in late childhood or adolescence and worsen with time.  Myoclonus is a term used to describe episodes of sudden, involuntary muscle jerking or twitching that can affect part of the body or the entire body.
    