Traveler's diarrhea typically lasts about 3 to 7 days. Most people start to feel better after a day or two and recover fully within about a week. In bacterial cases, symptoms usually improve within 2 to 3 days even without treatment but can persist up to a week. Viral causes generally last 2 to 3 days. When caused by parasites, symptoms may last longer, sometimes weeks. Mild cases often resolve on their own, but more severe or prolonged symptoms may require medical attention. Travelers' diarrhea usually begins suddenly and happens within the first week of travel or shortly after returning home.
