Skin changes. The most common skin changes linked with mild to severe COVID-19 include a flat rash covered with small bumps, discolored areas on the fingers and toes (COVID toes), and hives.
COVID toes appear to be more common in children and young adults. Swelling or discoloration can develop on one or several toes or fingers. The hands, wrists or ankles also can be affected. Blisters, itchiness, rough skin, or painful bumps can occur. A small amount of pus might develop under the skin. The symptoms can last 10 to 14 days or for months.