What is an example of an acute illness?

An acute illness is characterized by a rapid onset and a relatively short duration, often requiring immediate medical attention. Influenza, commonly referred to as the flu, exemplifies an acute illness because it tends to develop suddenly and has a limited timeframe, often resolving within a week or two with appropriate care.

In contrast, chronic conditions such as diabetes, hypertension, and asthma typically persist over a long period and may require ongoing management rather than immediate care. These conditions can have acute exacerbations, but they are not categorized as acute illnesses due to their long-term nature and the need for sustained medical intervention.