High-altitude peripheral edema

An accumulation of fluid in the subcutaneous tissue that occurs at altitudes above 2500 meters. It is more common in women.

It is attributed to the retention of sodium and water in individuals who urinate less and gain weight.

Swelling occurs and is more pronounced in the eyelids, cheeks and ankles.

Treatment is to slowly acclimatize to the altitude. A drug called acetazolamide can speed up the process.

It is not an emergency if there are no other symptoms of altitude sickness.