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The low oxygene levels found at high altitudes can cause problems for travelers who are going to lớn destinations higher than 8,000 feet above sầu sea level.

Ascend Gradually

If you plan to travel to a higher altitude và sleep there, you can get sick if you don’t ascover gradually:

Do not go from a low altitude khổng lồ sleeping at higher than 9,000 feet above sea cấp độ in one day. Instead, spkết thúc a few days at 8,000–9,000 feet before proceeding to a higher altitude to lớn give your body toàn thân time to lớn adjust to the low oxygen levels. Once you are above 9,000 feet, increase your sleeping altitude by no more than 1, 600 feet per day. For every 3, 300 feet you ascover, try to lớn spend a day without ascending further. Do not drink alcohol or vì chưng heavy exercise for at least the first 48 hours after you arrive sầu at an altitude above 8,000 feet. As an alternative sầu, consider taking a day trip to lớn a higher altitude và then returning lớn a lower altitude to sleep.

Sometimes your itinerary may not allow gradual ascent. If this is the case, talk to lớn your doctor about prescribing a medicine to prevent altitude illness. You should also be familiar with the symptoms of altitude illness so that you can take steps lớn prevent it from becoming more severe. Many high-altitude destinations are remote & lachồng access to lớn medical care, so preventing altitude illness is better than getting siông chồng và needing emergency treatment.

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Altitude Illness

The symptoms of altitude illness are similar to lớn those of a hangover: headache, tiredness, laông xã of appetite, nausea, and vomiting. Children who cannot yet talk may just seem fussy. Mild cases can be treated by alleviating symptoms (such as with painkillers for a headache) and should go away on their own within a few days. Medicines are available to lớn shorten the time it takes to get used to lớn high altitude. However, people with altitude illness should not continue lớn asckết thúc until they have sầu gotten used to the altitude. A person whose symptoms are getting worse while resting at the same altitude must desckết thúc or risk serious illness or death.

One severe consequence of altitude illness is swelling of the brain (high-altitude cerebral edema ). Symptoms include extreme fatigue, drowsiness, confusion, & loss of coordination. HACE is rare, but it can be fatal. If it develops, the person must immediately descover lớn a lower altitude.

Swelling of the lungs (high-altitude pulmonary edema ) is another severe consequence of altitude illness. Symptoms include shortness of breath, weakness, and cough. A person with HAPE must also desckết thúc & will likely need oxyren.

Preexisting Medical Conditions

People with pre-existing medical conditions should talk with a doctor before traveling to high altitudes:

People with heart or lung disease should talk lớn a doctor who is familiar with high-altitude medicine before their trip. People with diabetes need khổng lồ be aware that their illness may be difficult to manage at high altitudes. Pregnant women can make brief trips lớn high altitudes, but they should talk with their doctor because they may be advised not to lớn sleep at altitudes above 12,000 feet.

More Information

High Altitude Travel và Altitude Illness

Content source: National Center for Emerging & Zoonotic Infectious Diseases (NCEZID) Division of Global Migration & Quarantine (DGMQ) Find a ClinicexpandYellow Fever Vaccination ClinicsexpandTravel NoticesexpandTravel Advice and ResourcesexpandClinician Tools & ResourcesexpandTraveler AdviceexpandHealth Care During TravelexpandPosters and InfographicsexpandDisease DirectoryexpandZika Travel Yellow BookexpandContentsChapter 1About Yellow BookexpandFrequently Asked Questionsexp&

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