Another consideration is that of altitude. High altitude destinations such as the Andes or the Rocky Mountains, can be dangerous for people with a history of high blood pressure, cardiac problems asthma and respiratory difficulties. It is better to ask first if you are intending to travel to an area you think may present altitude problems. Again, if you do go to an area with a high altitude be sure to pace yourself, drink plenty of water, and don't push yourself to keep up if you are feeling ill. Speak up and let someone know that you are feeling sick.
Medical care is a major concern while traveling.
Letting them know in advance will give them time to prepare for any emergency and there will hopefully be no surprises. Remembering to pack any and all medicines and prescriptions you may need while on the trip should be paramount on your list. Don't forget to include any refill prescriptions as well. An extra pare of prescription glasses should go in the suitcase, too. In addition we are reminded not to overlook the degree of difficulty.