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Edema: Why You Swell and What to Do

Reviewed by medical AI · Updated: March 30, 2026

Medical causes of swelling and fluid retention, from benign to serious, and treatment options.

In this article

  1. 1.Overview
  2. 2.Common Causes
  3. 3.Related Symptoms
  4. 4.Related Conditions
  5. 5.Frequently Asked Questions
  6. 6.Related Articles

vHospital · Health Education

Edema is the accumulation of fluid in body tissues, most commonly causing swelling in the legs, ankles, and feet. Causes range from prolonged sitting to heart failure.

Common causes include venous insufficiency, pregnancy, medications (calcium channel blockers, NSAIDs), heart failure, kidney disease, liver cirrhosis, and lymphatic obstruction.

See also: Leg Swelling: Causes and When to Worry

Treatment targets the underlying cause. Leg elevation, compression stockings, dietary sodium restriction, and diuretics are commonly used. Walking activates the calf muscle pump and reduces venous pressure.

Seek evaluation for sudden swelling, one-leg swelling (possible DVT), swelling with shortness of breath or chest pain, or swelling not responding to elevation and rest.

See also: Managing Hyperthyroidism: Treatment Options

Common Causes

  • Infections and inflammation — bacterial, viral, or autoimmune triggers activate swelling
  • Metabolic disturbances — hormonal imbalances, nutrient deficiencies, or blood sugar changes
  • Structural or vascular causes — tissue damage, nerve compression, or circulatory problems
  • Psychological factors — stress, anxiety, and depression can produce measurable physical swelling
  • Underlying conditions such as Rheumatoid Arthritis, Gout, Heart Failure frequently present with swelling as a core feature

Frequently Asked Questions

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Medically ReviewedvHospital Editorial Team · 2024–2025
Sources:WHOPubMedUpToDateNICECDC

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⚠️ This content is for educational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.