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It can be seen in severe cases of Covid requiring hospital assistance.
A rare type of vasculitis is Henoch-Schönlein purpura, which can cause small bruises or red-purple spots, the NHS explained.
So-called Covid fingers and toes (frostbite) are commonly seen in cold weather with people who have problems with the blood supply.
However, frostbite occurs more frequently in hot weather in people with Covid.
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