[Battle Axe]

I saw the sore on her arm once about one week after she was infected. It was sort of like that, but not exactly. The black part on what I saw was a lot smaller and the yellow ring was a lot bigger and covered with more transparent skin where you could see the things under the thin layer of cells. I saw the same sore another week later and I only saw part of it. The part where the capillaries were turning purple.

The husbands sore was viewed 15 days after infection and was on his face and much smaller between his eye and his nose and that was the one that ran the most.

[Gondring]

It does sound like a spider bite and/or bacterial infection, though I'm not a physician and it's tough with wounds varying so much and trying to describe them.

For example, there's this brown recluse bite:

You can find black widow bites that are similar, and even centipede bites that get infected.

And the other pic was bacterial infection, but not anthrax.