Overview
Travelling abroad can be rewarding, but it may also bring health risks that are uncommon at home. These can include stomach illnesses, mosquito-borne infections, heat illness, altitude problems, injuries, and trouble getting routine medicines. A little preparation before departure can make travel healthier and less stressful.
Causes and Risk Factors
Risk depends on where you are going, how long you will stay, the season, your activities, and your personal health needs. Eating unsafe food, drinking contaminated water, swimming in unsafe water, insect bites, close contact with sick people, and long travel times can all increase risk. Pregnancy, older age, chronic medical conditions, and a weakened immune system can also affect travel planning.
Who Is Affected
Anyone travelling internationally can be affected, including people visiting family, tourists, students, workers, and humanitarian travelers. Risk may be higher for young children, older adults, pregnant travelers, and people with heart disease, lung disease, diabetes, or immune system problems. People going to rural areas, high altitudes, or places with limited medical care may need extra planning.
Prevention
Before travel, check destination-specific health advice, vaccine recommendations, and any entry requirements such as proof of vaccination. Pack your regular medicines in original containers, carry a copy of prescriptions, and consider travel insurance that covers medical care and evacuation. During travel, wash hands often, choose food and drinks carefully, prevent insect bites, use sun protection, stay hydrated, and follow local safety guidance for transport, water, and weather.
Diagnosis and Tests
A pre-travel health visit can help identify vaccines, malaria prevention needs, and other precautions based on your itinerary and health history. If you become sick during or after travel, a clinician may ask where you went, what you ate, whether you had insect bites, freshwater exposure, sexual contact, or animal contact. Tests depend on your symptoms and travel history.
Treatment Categories
Treatment depends on the problem and may include rest, fluids, symptom relief, or specific medicines prescribed by a healthcare professional. Some travel-related illnesses need urgent medical evaluation, especially fever after visiting a malaria area, severe dehydration, breathing problems, or signs of serious infection. Do not start or stop important medicines without medical advice.
Diet and Lifestyle
Choose food that is freshly cooked and served hot when possible, and be cautious with raw foods if cleanliness is uncertain. Drink water from a reliable source and avoid dehydration, especially in hot climates or at high altitude. Try to sleep enough, limit excess alcohol, and move around during long trips to reduce stiffness and lower the risk of circulation problems.
When to Seek Medical Care
Seek medical care if you develop fever, persistent diarrhea, vomiting, rash, cough, shortness of breath, yellowing of the eyes or skin, unusual bruising, painful urination, or worsening weakness during or after travel. Also get medical advice for animal bites, possible sexually transmitted infections, or if you miss important medicines. Tell the clinician where you traveled and when your symptoms started.
When It May Be an Emergency
Get emergency help right away for trouble breathing, chest pain, confusion, seizures, severe dehydration, fainting, severe allergic reactions, major injury, or signs of stroke. Fever after travel to a malaria-risk area can be an emergency and should be assessed quickly. If local emergency numbers are unclear, ask hotel staff, local contacts, or your embassy for help accessing urgent care.
Questions to Ask a Healthcare Professional
Ask which vaccines or preventive medicines you may need for your destination, and when you should get them before departure. Ask how to manage your regular medicines across time zones, what to do if you become sick abroad, and whether you need a written medical summary. You can also ask about food and water safety, insect protection, altitude, and how soon to seek care for fever after you return.