RT Book, Section A1 Simon, Roger P. A1 Aminoff, Michael J. A1 Greenberg, David A. SR Print(0) ID 1148739529 T1 Confusional States T2 Clinical Neurology, 10e YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9781259861727 LK neurology.mhmedical.com/content.aspx?aid=1148739529 RD 2024/04/18 AB A confusional state, sometimes referred to as encephalopathy or delirium, is a state in which the level of consciousness is depressed, but to a lesser extent than in coma (unarousable unresponsiveness; see Chapter 3, Coma). In confusional states, responses to stimulation are at least semi-purposeful, whereas in coma, patients fail to respond to even painful stimulation or do so only in reflex fashion. Thus, the difference between a confusional state and coma is largely one of degree, and the causes overlap extensively.