1. Delirium vs. Dementia: The Critical Distinction The most heavily tested concept is differentiating these two conditions.

• Delirium is an acute, rapid-onset syndrome characterized by an impaired, fluctuating level of consciousness. It is a temporary, reversible condition caused by underlying physiological issues like infections, drug toxicity, withdrawal, or metabolic imbalances.
• Dementia is a gradual, insidious, and progressive disease marked by cognitive decline. Crucially, the patient's level of consciousness remains intact.

2. Delirium: Must-Know Clinical Knowledge

• Safety Priority: Patients have poor judgment, sensory misperceptions (illusions and hallucinations), and unpredictable m ...