Generally speaking, places at high altitudes may cause problems for people with lung conditions as their lungs will need to work much harder to breathe. The climate may also be a factor; if it’s too hot, your child may get fatigued easily. Consider the terrain of your destination, how easy will it be to walk around or use a wheelchair?
The further away you travel, the more you may need to consider: how easy is it to get oxygen delivered to your destination? will you need additional insurance? how would you cope if your child needed medical assistance in another country?
Speak to your child’s healthcare team before planning any vacation. They’ll be able to advise you on the type of vacation your child is physically up to.