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Heat edema (swelling) - OBGYN Associates

Our Health Library information does not replace the advice of a doctor. Please be advised that this information is made available to assist our patients to learn more about their health. Our providers may not see and/or treat all topics found herein.

Heat edema (swelling)

It is not uncommon for the feet or hands to become swollen when a person sits or stands for a long time in a hot environment. This swelling is called heat edema.

Heat causes the blood vessels to expand (dilate), so body fluid moves into the hands or legs by gravity.

The balance of salt in the body is also a risk factor for heat edema. If salt loss is less than normal, the increased salt level draws fluid into the hands and legs.

Older adults have an increased risk of heat edema, especially if they have other medical conditions that affect their circulation.

People visiting hot climates from colder climates may also have an increased risk of heat edema.

Current as of: July 31, 2024

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.