Has anyone ever seen these spots before!!!!?

Vi

My 13 year old daughter has these 2 spots on her arms and they are huge!!!! She has a dermatologist appointment on March 30..... Just curious if anyone has seen anything like this before..... She also said the bigger one is where she burned herself 7 months ago 🤦🏾‍♀️😩 like do what?! Doesn't feel like scars😣