Any momma's know what this could be? I haven't changed any thing. I use unscented laundry soap, unscented lotion and body soap. It's only on his sides no where else. I haven't changed the brand of diapers. No change in his formula/bottles or the soap used to clean them. And he doesn't spend time outside unless we run errands and even then I try to keep it to a minimum.
My son has had that, my doctor said it was an infection, and gave him a cream, the next day it was gone after I applied the cream. Ive never seen a heat rash like that to be honest. Heat rash looks more like acne, and is more sporadic