Ever since I was a child, I would get extremely hard spots on my legs in cold weather. The skin gets almost as hard as a fingernail. If I put a dollop of lotion on the spot, it will suck up the lotion in a minute or two and the spot will be gone the next day.
I’ve always called these chilblains, but I guess that’s not what they are. So what are they?
I just followed** cmyk**'s link about psoriasis. I think that might be it. My spots are “salmon” colored with silvery scales, also raised and rough. They are triggered by dry air. And, get this, I have another auto-immune condition (Hashimoto’s disease), though I didn’t develop that until I was 13 years old, and had the red spots earlier.