Hello, I am quite new to mumsnet so am still learning how to get around. I have been searching for any pointers on a rash which has developed on my ds. It is predominantly on his arms, but also a little on his chest, back and on his neck under his chin. The spots are individual and not blotchy. I have done the glass test on it and they do go white under pressure. It has been very hot recently, does it sound like a heat rash?