Confused, four weeks after a new tablet

A 78-year-old is brought in by her daughter, who says she has not been herself since the summer.

78-year-old womanED, majors 3Fictitious educational patient

HypertensionOsteoarthritisLives alone

Day 0 · 11:40

Arrival

Her daughter has driven her in. Four weeks of gradual change: muddled conversation, two falls, and yesterday she could not remember how to work the kettle. No fever, no cough, no urinary symptoms. Her blood pressure tablet was changed about a month ago.

Vitals

HR78BP126/74RR16SpO297%T36.4

Before any investigation, what single question would most change your differential?

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