Stage I - General apathy
Stage II - Lethargy, drowsiness, variable orientation, asterixis
Stage III - Stupor with hyperreflexia, marked disorientation, inability to follow commands, extensor plantar reflexes
Stage IV - Coma
Hepatic encephalopathy
Subdural Hematoma
Ethanol toxicity
Hypoglycemia
Methanol toxicity
Wernicke-Korsakoff Syndrome
Acute hepatitis
Hyper/hyponatremia