When Does Covid Cause Blood Clots?

First, COVID-19 can cause severe inflammation, which can trigger your clotting system. “When you, say, fall and skin your knee, it turns your immune system on, and one of the ways your immune system reacts to an injury is by making your clotting system more active,” Exline said.

Can blood clots be a complication of COVID-19?

Some COVID-19 deaths are believed to be caused by blood clots forming in major arteries and veins. Blood thinners prevent clots and have antiviral, and possibly anti-inflammatory, properties.

How does COVID-19 affect the blood?

Some people with COVID-19 develop abnormal blood clots, including in the smallest blood vessels. The clots may also form in multiple places in the body, including in the lungs. This unusual clotting may cause different complications, including organ damage, heart attack and stroke.