Does anybody know what this could be?

So this has been on my arm for a good week or so. It started off as a red mark then this appeared . It’s itchy sometimes just tiny red dots in one area. It hasn’t spread anywhere else, I do have sensitive skin but idk what caused this.

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors