Chilblain is the result of poor circulation and worse heating. 😆 The fact is my room isn-t heated in the winter, but I spend most of my time either there or outside, and I have poor circulation in my hands. Somewhere along the line they got frostbit, and now in the winter, certain spots redden and swell during a temperature change. My fingers are normal in the cold – actually not normal, they turn the most interesting shades of red and blue and purple – but when I get into a heated building they get red and itchy. That-s chilblains.