Final answer:
Polypharmacy refers to the use of more medications than is medically necessary. It can lead to increased risk of adverse drug reactions and medication errors.
Step-by-step explanation:
Polypharmacy refers to the use of more medications than is medically necessary. This means that an individual is taking multiple medications when they may not require all of them. It can happen due to various reasons such as multiple health conditions, prescriptions from different doctors, and medication interactions. Polypharmacy can lead to increased risk of adverse drug reactions and medication errors.