Chilblains – NHS

Chilblains are small, itchy, red patches that can appear after you have been in the cold. They usually clear up on their own. You may need to see a GP if they do not go away. Check if you have chilblains. Chilblains usually appear a few hours after you have been in the cold. You mostly get them on your fingers and toes.

https://www.nhs.uk/conditions/chilblains/