At first I couldn't figure out what it was. Then I realized the red bumps stopped exactly at the point my socks did.
I had just bought a pack of Hanes socks. They said something like: "double strong heel and toe". When I looked at the materials, they had rubber latex listed. So now I know that I'm allergic to rubber latex, and I'll have to be careful when buying socks.
This week has been insane. Times like this makes me thankful that I know God.