Which term means to occur again?

• A. Prognosis
• B. Preexisting
• C. Recur
• D. Primary

Answer: (C)

The concept being tested is vocabulary for repetition in medical terms. Recur means to happen again after a period of time. In medical contexts, you’d say symptoms or a disease recur if they return after a time of improvement or remission. For example, a fever that returns after it has subsided would be described as occurring again. This makes recur the best fit because it directly conveys the idea of repetition. Prognosis refers to the expected course of a disease, preexisting means present before, and primary means first or main, none of which specifically convey repeating events.