Ideas?

Does anyone have an idea of what this may be? We have a doctors appointment Monday but it’s really bothering me on what’s going on with her. It’s on her face, neck(front and back), chest, top of her back, behind her ears, on her ears, and in her head, well as far as I can see on the sides, back, and top of her head.

I thought it was an allergic reaction to her baby wash but I don’t put it on her face and don’t wash her hair often.