An etiologically nonspecific syndrome characterized by concurrent disturbances of consciousness and attention, perception, thinking, memory, psychomotor behaviour, emotion, and the sleep-wake cycle. It may occur at any age but is most common after the age of 60 years. The delirious state is transient and of fluctuating intensity; most cases recover within 4 weeks or less. However, delirium lasting, with fluctuations, for up to 6 months is not uncommon, especially when arising in the course of chronic liver disease, carcinoma, or subacute bacterial endocarditis. The distinction that is sometimes made between acute and subacute delirium is of little clinical relevance; the condition should be seen as a unitary syndrome of variable duration and severity ranging from mild to very severe. A delirious state may be superimposed on, or progress into, dementia.
Delirium and Psychotic Symptoms - An Integrative Model
Scientific article by Bruce G Charlton and J Lee Kavanau published in Medical Hypotheses.
eMedicine - Delirium
Background, causes, differential diagnosis and treatment of this acute confusional state. Article by Kannayiram Alagiakrishnan, MD.
Resource providing information on the causes and treatments of delirium in ITU patients.
Taken from the British Journal of Psychiatry.
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