A situation in which elderly people are prescribed several medications, whose interactions can result in dementia-like symptoms is known as what?

• A. Monotherapy
• B. Multimorbidity
• C. Drug interactions
• D. Polypharmacy

Answer: (D)

Polypharmacy is the situation where an older adult is taking multiple medications, often for several chronic conditions. As the number of drugs increases, so does the chance of drug–drug interactions and adverse effects. Aging brings changes in how the body processes medicines, with slower metabolism and clearance and greater sensitivity to certain drugs, which makes cognitive side effects more likely. When several medications interact or when drugs with strong anticholinergic, sedative, or other cognitive effects are used together, older adults can develop confusion or dementia-like symptoms. These symptoms may improve if medications are reviewed and adjusted, highlighting that they’re medication-related rather than true dementia. This differs from monotherapy (one drug) and multimorbidity (multiple diseases); drug interactions describe a mechanism, but polypharmacy captures the broader scenario of many medications contributing to cognitive issues.