Overview
Traveller's diarrhea is diarrhea that starts during travel or shortly after returning home. It is usually caused by bacteria, viruses, or parasites picked up from contaminated food or water. Symptoms are often mild to moderate, but some people can become dehydrated or develop more serious illness.
Key Symptoms
Common symptoms include frequent loose or watery stools, stomach cramps, bloating, nausea, and an urgent need to have a bowel movement. Some people also have vomiting, fever, or feel generally unwell. Blood in the stool, severe weakness, or signs of dehydration are more concerning symptoms.
Causes and Risk Factors
The illness happens when germs enter the digestive system through unsafe food or water. Higher-risk exposures can include untreated water, ice made from unsafe water, raw or undercooked foods, unpasteurized dairy products, and food handled in poor hygiene conditions. Risk may also be higher in places with limited sanitation or when a person has reduced stomach acid or a weakened immune system.
Who Is Affected
Anyone who travels can get traveller's diarrhea, especially when visiting places where food and water sanitation standards differ from what they are used to. Children, pregnant people, older adults, and people with chronic illnesses may be more affected by fluid loss. People with weakened immune systems may also have a higher chance of complications.
Prevention
Wash hands often with soap and water, especially before eating and after using the toilet. If soap and water are not available, use an alcohol-based hand sanitizer when hands are not visibly dirty. Choose food that is cooked and served hot, avoid raw or undercooked items, and use water from a trusted source for drinking and brushing teeth.
Treatment Categories
The main goal is to replace lost fluids and salts, using safe liquids and oral rehydration solutions if available. Rest can help while the stomach settles, and heavy, greasy, or very spicy foods may make symptoms worse for some people. A healthcare professional may recommend additional treatment depending on the cause, severity, travel history, and the person's age and health conditions.
Diet and Lifestyle
Sip fluids often rather than taking large amounts at once if nausea is present. As eating becomes easier, start with simple foods that are gentle on the stomach, based on what is available and tolerated. Avoid alcohol if it worsens dehydration, and take extra care with hygiene to avoid spreading illness to others.
When to Seek Medical Care
Seek medical care if diarrhea is severe, lasts more than a few days, or keeps coming back. Contact a healthcare professional sooner if there is fever, blood or mucus in the stool, repeated vomiting, little or no urination, dizziness, or worsening weakness. Infants, older adults, pregnant people, and people with chronic medical problems should get advice early because dehydration can develop more quickly.
When It May Be an Emergency
Get urgent medical help for confusion, fainting, inability to keep fluids down, severe dehydration, very severe abdominal pain, or signs of shock. Emergency help is also needed for a child or adult who becomes unusually drowsy, hard to wake, or has not passed urine for a long time. Bloody diarrhea with severe illness also needs urgent assessment.