What Causes Rashes On The Chin?

Hello doctor, My face started breaking out in hives overnight, mainly on my lower left cheek and down to my chin. At first i thought maybe just bad breakout, so I applied acne treatment gel, but it s been 3 days, and the condition has gotten worse. I m starting to think it might be an allergic reaction, however, I can t think of anything that will cause it, except I was experiencing food poisoning a few days back, and that same morning, I discovered that my face was covered in red bumps. I m hoping to receive an answer on what could possibly cause the inflammation and how to treat it. Thank you!