What Causes Redness At The Creases Of The Neck And Arms?

Question : Good morning, my name is XXXXXXX grandmother to 12 yr old XXXXXXX XXXXXXX is definitely overweight, always has been. He's otherwise bright and healthy. We are without health insurance. XXXXXXX is active, and eats well. However, I'm concerned about his health. He's has this general overall redness for about a year maybe longer, that seems to originate from the creases of his body, neck arms etc. It appears spotty then joins coverage. It's pretty much red and when it's pressed on, it seams swollen and turns white and returns to the redness. It doesn't bother him, it's not hot, or scaly or itchy. Of course I know he needs to see a physician, I'm working on legal matters, to get that done. I'm just fearful that something bad is going to happen. What are your thoughts? Thank you for your time. Have a good day.

I will get pictures posted today after he comes home from school. Thank you.