Overview
COVID-19 is associated with an increased risk of blood clots (thrombosis). These can form in the legs (DVT), lungs (pulmonary embolism), or other parts of the body. This is a serious and potentially fatal complication.
Symptoms
Symptoms depend on the location: DVT (leg pain, swelling, redness), pulmonary embolism (chest pain, shortness of breath, coughing blood), or stroke (sudden weakness, confusion).
Causes
The virus can cause widespread inflammation and damage to blood vessels, activating the body's clotting cascade. This increases the risk of clot formation.
Treatment
Treatment includes anticoagulant (blood-thinning) medications. Hospitalized patients may be given them as a preventative measure.
When to See a Doctor
Seek emergency care if you have any signs of a blood clot, such as sudden leg swelling, chest pain, difficulty breathing, or neurological symptoms.