Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Hepatic encephalopathy ?
    ### Response:
    Hepatic encephalopathy is a syndrome observed in some patients with cirrhosis. It is defined as a spectrum of neuropsychiatric abnormalities in patients with liver dysfunction, when other known brain disease has been excluded. Signs and symptoms may be debilitating, and they can begin mildly and gradually, or occur suddenly and severely.
    