Girls, what is this?! We go outside and immediately get spots on our n…

Girls, what is this?! We go outside and immediately get spots on our necks, at first I thought it was grass or something else, then on the sun, but we always wear hats and sunscreen. As soon as we sit in the car or come home for about five minutes, everything disappears. I'm going to see a doctor tomorrow. Maybe it's poorly visible in the photo, but like a burn from clover appears, but my daughter doesn't even bother with it, but me, it really bothers me.