Scientists have investigated how the chilblain-like lesions arise in some people who catch Covid.
The affected skin - usually the toes, but sometimes the fingers - can look red or purple. Some people develop painful raised bumps or areas of rough skin. There can also be pus.Often, they will have none of the classic Covid symptoms, such as the persistent cough, fever and loss or change in smell or taste.These latest study findings, based on blood and skin tests, suggest two parts of the immune system may be at play.
Cells lining small blood vessels supplying the affected areas are also involved, say the investigators from the University of Paris, France. The researchers studied 50 people with suspected Covid toe in the spring of 2020, and 13 others with similar chilblains lesions that were not linked to Covid infections, because they occurred long before the pandemic began.UK podiatrist Dr Ivan Bristow said, for most - like the regular chilblains typically seen during cold spells and in people who have problems with circulation - the lesions usually go away on their own.
Dr Veronique Bataille, a consultant dermatologist and spokeswoman for the British Skin Foundation, said Covid toe was seen very frequently during the early phase of the pandemic, but has been less common in the current Delta variant wave. That might be down to more people being vaccinated or having some protection against Covid from past infections.Covid-related skin problems can appear quite a while after the acute infection and in people who have no other symptoms, so the link with the virus is sometimes not made, she said.
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