What is this circular thing on my cow's skin? (Red circle around it)

So, about five days ago, this weird growth popped up on my elbow. It’s got this red, raised border that looks kind of like a ring, and the center is just this grayish color. It’s itchy, sometimes stings, and my arm is feeling a little tender too. I didn't burn myself or bump into anything—it just appeared out of nowhere...
Does anyone know what this could be, and should I go see a dermatologist?

The middle part is peeling. I forgot to mention that.

I honestly have no clue what might be going on, but look, if someone is actually giving you an answer or not, just go see a doctor. 😉

You absolutely have to see a doctor about this! I know someone who went through something remarkably similar and they honestly thought it would just clear up on its own, but it certainly did not. I can't quite recall the specific medical term right now, but if I remember correctly, it involved some sort of zoonotic infection passed from animals to humans. Of course, there is no guarantee that what you're experiencing is the exact same thing, but I truly believe it isn't something that will simply vanish without professional medical attention.

It sounds like a fungal infection to me, but you really ought to see a doctor just to be safe. Getting the wrong treatment could end up making things a lot more complicated for you than they need to be.