True statement regarding delirium includes

(D) Decreased attention # DELIRIUM:> Delirium is defined as a transient, usually reversible, cause of cerebral dysfunction and manifests clinically with a wide range of neuropsychiatric abnormalities.> Clinical hallmarks are decreased attention span and a waxing and waning type of confusion.> Delirium or acute confusional state is a transient global disorder of cognition.