Blood clot and DVT symptoms

New one-sided leg swelling, warmth, and pain — or sudden shortness of breath — can indicate a blood clot (DVT/PE). This is an emergency; go to the ER for immediate evaluation.

Also called: DVT signs · leg swelling one side · pulmonary embolism

Medically reviewed by Dr. Ikechukwu Ogbu, MD
MD · Board-Certified, Internal Medicine · Last reviewed

Call 911 or go to the ER immediately:

  • New leg swelling, redness, or warmth (possible DVT)
  • Sudden shortness of breath or chest pain (possible pulmonary embolism)
  • Coughing up blood
  • Rapid heart rate with lightheadedness

When to see a clinician

  • New leg swelling, redness, or warmth (possible DVT)
  • Sudden shortness of breath or chest pain (possible pulmonary embolism)
  • Coughing up blood
  • Rapid heart rate with lightheadedness

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