Travel health guide. Reviewed by Luis C. Palacios, MD, board-certified family physician.
Acute mountain sickness (AMS)
AMS can start within hours of arriving above about 8,000 feet. Typical symptoms are headache, nausea, tiredness, poor sleep and loss of appetite — often described as a bad hangover.
High altitude pulmonary edema (HAPE)
HAPE is a dangerous build-up of fluid in the lungs. Warning signs are breathlessness at rest, a persistent cough and marked weakness. It requires immediate descent and medical care.
Medications
Acetazolamide (Diamox) can help prevent and treat AMS. Nifedipine and dexamethasone are used in specific situations under medical supervision. Talk to your doctor before your trip.
Altitude sickness in children
Children get altitude sickness as often as adults but may only show fussiness, poor appetite or sleep changes. Watch them closely during the first days.
Before you travel
Patients in Frisco and Dallas can book a pre-travel visit to review risks and get prescriptions before heading to Colorado or other high-altitude destinations.
This information is educational and does not replace a medical visit. In an emergency, call 911.