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In addition to the lungs, blood clots, including those associated with COVID-19, can also harm:

The nervous system. Blood clots in the arteries leading to the brain can cause a stroke. Some previously young, healthy people who have developed COVID-19 have suffered strokes, possibly due to abnormal blood clotting.

The kidneys. Clogging of blood vessels in the kidney with blood clots can lead to kidney failure. It can also complicate dialysis if the clots clog the filter of the machine designed to remove impurities in the blood.

Peripheral blood vessels and “COVID toe.” Small blood clots can become lodged in tiny blood vessels. When this happens close to the skin, it can result in a rash. Some people who test positive for COVID-19 develop tiny blood clots that cause reddish or purple areas on the toes, which can itch or be painful. Sometimes called COVID toe, the rash resembles frostbite.


Blood clots can cause problems ranging from mild to life threatening. If a clot blocks blood flow in a vein or artery, the tissue normally nourished by that blood vessel can be deprived of oxygen, and cells in that area can die.

https://www.hopkinsmedicine.org/health/c...your-blood

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What should I do to prevent clotting if I get infected with the coronavirus?

Simple steps that can help to prevent blood clots include: 

Get up and move around every two hours, drink plenty of fluids to stay hydrated.

Contact your healthcare provider if you experience any of the symptoms of a blood clot in your limbs or lungs, which include: Swelling, pain or tenderness not caused by injury, skin that is warm to the touch, redness or discoloration of the skin. Alert your healthcare provider if you experience any of these signs or symptoms. If you experience the symptoms of a blood clot in your lung, including difficulty breathing (at rest or with exertion), chest pain that worsens with a deep breath, coughing or coughing up blood, and a faster than normal or irregular heartbeat, seek immediate medical attention.

https://www.stoptheclot.org/covid-19-and...-clotting/