Does travel insurance provide coverage for pre-existing medical conditions?

Pre-existing conditions are typically not covered under most travel medical insurance plans due to the short-term nature of the plans. For most plans, the only thing that is covered in relation to a pre-existing condition is something diagnosed as an acute onset. Acute onset is a sudden and unexpected recurrence of a pre-existing condition that was not chronic, for which no medication was being taken, and that happens without warning, requiring immediate medical attention. Customarily, travel medical insurance covers anything new that happens, emergency and non-emergency both. Travelers visiting the United States can consider the VisitorsProtect policy which is able to cover the unexpected worsening of a pre-existing condition.