The duration of acute diarrhea is defined as lasting less than how many days?

• A. Less than 7 days
• B. 7-14 days
• C. 1-3 months
• D. 1 year

Answer: (A)

Diarrhea is classified by how long it lasts, and the short, self-limited cases are labeled acute. In this context, the cutoff is less than seven days. That means most acute diarrheal illnesses resolve within the first week and are managed with supportive care, since they’re typically viral or mild bacterial infections. If symptoms extend beyond a week, it signals a shift toward persistent or more complex causes that require further evaluation and a different treatment approach. The other options describe longer durations that fall outside the acute category (seven to fourteen days, months, or a year), which is why the less-than-seven-days boundary is the best fit for the acute designation.