Most important feature of delirium -

Ans. is 'd' i.e., Clouding of consciousness o The most conspicuous feature is a clouding of consciousness which ranges from mild dulling to deep coma.Deliriumo Delirium is defined by the acute onset of fluctuating cognitive impairment and a disturbance of consciousness. It is also referred to as acute confusional state or acute organic brain syndrome Clinical features of delirium -1) Altered consciousness (clouding of consciousness to coma)2) Cognitive impairment Impaired attention, poor concentration, disorientation or confusion, altered sensorium, and memory disturbances (Impairment of immediate and recent memory).3. Perceptual anomalies Illusion, Hallucinations.4. Emotional disturbances fear & anxiety'.5. Language disturbances and psychomotor disturbances (hypoactivity or hyperactivity).6. Disturbance of sleep-wake cycle.7. Autonomic disturbances Tachycardia, sweating, tremors.8. Neurological disturbances Tremor, seizure, choreiform movements.