What Can Cause Swelling?

A range of conditions can cause swelling. Insect bites, illnesses, or injuries often result in external swelling. Internal swelling is often a side effect of a medication or the result of a serious injury.
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What causes swelling?
  • insect bites.
  • a rash.
  • hives.
  • injury.
  • fluid retention.
  • pregnancy.
  • menstruation.
  • hormonal changes.

When should you worry about swelling?

Swelling by itself is not usually a sign of heart, liver, or kidney disease. However, people with swelling that also experience a loss of appetite, weight gain, and fatigue should talk to a doctor. Shortness of breath or chest pain should always trigger a 911 call.

What conditions cause swelling?

Several diseases and conditions may cause edema, including:
  • Congestive heart failure. ...
  • Cirrhosis. ...
  • Kidney disease. ...
  • Kidney damage. ...
  • Weakness or damage to veins in your legs. ...
  • Inadequate lymphatic system. ...
  • Severe, long-term protein deficiency.
James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.