Which description best defines a chronic disease?

• A. Uncertain etiology
• B. A disease with prolonged temporal course, doesn't resolve spontaneously, and complete cure rarely happens.
• C. Longer latency period
• D. Uncurable

Answer: (B)

Chronic disease is defined by a long-lasting, ongoing course rather than a short illness that resolves quickly. The best description emphasizes a prolonged temporal course, persistence without spontaneous resolution, and a low likelihood of complete cure. This captures the typical pattern: conditions that require ongoing management over time and are not expected to disappear on their own.

Other descriptions miss that core idea. An uncertain etiology isn’t about how long a disease lasts or how it behaves over time. A longer latency period describes a delay before symptoms appear, not how the disease behaves once it starts. Saying a disease is uncurable is too absolute—many chronic conditions are not cured but are managed effectively, and some can be cured in specific circumstances, whereas the defining feature remains the extended, persistent nature.