Yes and no, mostly no. Many travel insurance policies state they cover pre-existing conditions but if you read the fine print it is for “acute onset” of a pre-existing condition. This means that if you have a sudden and unexpected condition developed on your trip due to an existing condition, they will some benefits as listed in the policy if treated immediately. If however, you have a condition that is degenerative, or had symptoms leading up to coverage starting, you most likely will not have any cover