Traveling from one climate to another can present problems such as severe sunburn, viral infections, rashes and insect bites. Red tide is a bacteria that can make you sick if you swim in the ocean during an outbreak. In fact, no trip, domestic or international, is completely safe. According to Hartley, the last documented malaria outbreak in the continental United States occurred in 1956 in South Carolina. There are also killer bees in south Texas and Louisiana, fire ants in the Southwest and stingrays and jellyfish on most eastern shores.
Motion sickness can be a problem on any mode of travel, from trains and boats to cars and airplanes.
Consult a physician to find out what, if any, remedy is best for you. Getting fresh air and keeping your eyes on the horizon can also help. Hartley says he hasn't seen the syndrome in his practice. DVT is rare, but it is a risk. Symptoms include swelling or pain in the legs during or after travel and sudden coughing or chest pain during or after travel.