Altitude sickness, or acute mountain sickness, occurs when your body struggles to adapt to high altitudes. Symptoms may include headaches, dizziness, nausea, and fatigue, typically occurring at elevations above 2,500 meters. It’s a common issue for travelers in mountainous regions.

Acute Mountain Sickness (AMS) FAQ


What causes altitude sickness?

Altitude sickness is caused by reduced oxygen levels at high elevations, leading to inadequate oxygen supply to the body.

What are the common symptoms?

Symptoms include headaches, nausea, dizziness, fatigue, and difficulty sleeping.

How is altitude sickness diagnosed?

It is typically diagnosed based on symptoms and altitude exposure.

Can altitude sickness be prevented?

Yes, gradual ascent, hydration, and medications can help prevent altitude sickness.

Who is most at risk for altitude sickness?

Those ascending quickly to high altitudes, particularly individuals with a history of altitude sickness.

What should I do if I have symptoms?

Descend to a lower altitude and stay hydrated; consider seeking medical attention if symptoms worsen.

How long does altitude sickness last?

Symptoms often improve within a few days as your body acclimatizes.

Is altitude sickness serious?

In some cases, it can lead to more severe conditions, like High Altitude Pulmonary Edema (HAPE), which requires immediate attention.

What medications help with altitude sickness?

Common medications include Diamox (Acetazolamide) and over-the-counter options like ibuprofen.

Can acclimatization help?

Yes, acclimatization allows your body to adjust to lower oxygen levels, reducing the risk of altitude sickness.

Are there natural remedies?

Some people find ginger tea or herbal supplements helpful, but consult a healthcare professional for advice.

Can I continue climbing if I feel sick?

It’s advisable to descend to a lower elevation if you experience symptoms instead of continuing your ascent.

Does physical fitness affect altitude sickness?

While being fit can help, it doesn't guarantee you won't experience altitude sickness; acclimatization is key.

Where can I find information on altitude sickness?

Consult medical professionals or trusted health sources for comprehensive information on altitude sickness.

Can altitude sickness occur at any elevation?

Yes, while most common above 2,500 meters, some individuals may experience symptoms at lower elevations.

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Information provided by Dr. Nithya Priya Raju. Reviewed by Dr. Mohamed El Khouly