Your patient presented with a sudden change in mental status and her speech is rambling and incoherent. She is anxious and irritable. You suspect

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Delirium is characterized by a sudden change in mental status, often with confusion, disorientation, and difficulty maintaining a coherent stream of thought or conversation, matching the symptoms described. Dementia typically has a gradual onset, sundowning refers to worsening symptoms in the evening in people with dementia, and a stroke could cause sudden changes but is more likely to have focal neurological deficits.

Your Patient Presented with a Sudden Change in Mental Status