Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Hashimoto's encephalitis ?
    ### Response:
    Hashimoto's encephalitis (HE) is a condition characterized by onset of confusion with altered level of consciousness; seizures; and jerking of muscles (myoclonus). Psychosis, including visual hallucinations and paranoid delusions, has also been reported. The exact cause of HE is not known, but may involve an autoimmune or inflammatory abnormality.
    