Which term describes a beginning that occurs suddenly or abruptly?

• A. Paroxysmal
• B. Ongoing
• C. Overt
• D. Ostracize

Answer: (A)

Describing onset timing in medical terms involves choosing language that conveys how symptoms begin. A sudden, abrupt onset is captured by paroxysmal, from paroxysm meaning a sudden attack or fit, with the adjective form signaling this abrupt, episodic nature. So symptoms described as paroxysmal appear in sharp bursts rather than gradually or continuously. For example, paroxysmal chest pain starts abruptly in episodes and then may stop rather than lingering steadily. Ongoing describes something continuous over time, overt means clearly visible or obvious, and ostracize means to exclude someone; none of these convey the idea of a sudden onset.