Altitude/Mountain Sickness Treatment

Medically Reviewed by Carol DerSarkissian, MD on January 15, 2020

Mild altitude sickness or acute mountain sickness:

Symptoms may include:

Severe altitude sickness, high-altitude pulmonary edema (HAPE) or high-altitude cerebral edema (HACE):

Symptoms may also include:

1. Descend to Lower Altitude

  • For mild acute mountain sickness, the person may be able to stay at current altitude to see if their body adjusts. If symptoms don’t get better in 24 to 48 hours or if they get worse, the person should go down to a lower altitude and seek immediate medical care.
  • For severe symptoms, the person should immediately be taken down 1,500 to 2,000 feet with as little exertion as possible. Keep going down until symptoms go away. Get medical help right away as waiting could cause serious problems or even death.
  • Even if symptoms are mild, the person should not go any higher in altitude until symptoms are completely gone.

2. Treat Symptoms

3. See a Health Care Provider

  • If mild symptoms persist after descent, call a healthcare provider.
  • For severe symptoms, the person should see a doctor as soon as possible, even if symptoms go away after descent.
WebMD Medical Reference


SOURCES: "High Altitude Illness: How to Avoid It and How to Treat It."

CDC: "Altitude Illness."

American Heart Association: "High Altitude Sickness."

American College of Emergency Physicians: "Getting High: AMS, HACE, and HAPE."

Schimelpfenig, T. NOLS Wilderness First Aid, Stackpole Books, 1991.

Weiss, E. A Comprehensive Guide to Wilderness Travel, Adventure Medical Kits, 2005.

International Society of Mountain Medicine: "An Altitude Tutorial."

Altitude/Mountain Sickness Information from eMedicineHealth.

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