Stage | Mental Status | Asterixis | EEG |
Stage1 | Changes in behavior (euphoria/depression), mild confusion, slurred speech, disordered sleep | Yes/No | Usually Normal |
Stage 2 | Lethargy, moderate confusion | Yes | Abnormal |
Stage 3 | Marked confusion (stupor), incoherent speech, sleeping but arousable | Yes | Abnormal |
Stage 4 | Coma, unresponsive to pain | Yes | Abnormal |