An alcohol withdrawal syndrome characterized by hallucinations, disorientation, tachycardia, hypertension, low grade fever, agitation and diaphoresis. It occurs in 5% of patients experiencing withdrawal, typically begins between 48 and 72 hours after the last drink, can last one to five days and has a mortality rate of 5% (death is usually due to arrhythmias or complicating illnesses such as pneumonia).