First of, it is definitely not meningitis. Or chickenpox - he's had that.
On Sunday we went to friend's house. He and her 2 year old were playing in the garden, digging about in (empty) veg patch. Within a couple of hours he developed a weird rash and his arm which has now spread across his trunk and round his back. Nothing on face fortunately yet.
It doesn't appear to be painful or itchy, because he isn't scratchy and isn't upset when I put acqueous cream on it. But what is it? It was red and a bit bumpy, kind of like the rash you get after wading through nettles at first, but now it's like patches of eczema. He did have a bit of dry flaky skin when a tiny baby.
Help? Any ideas very gratefully received. I don't want to bother the doctor if I don't need to for the simple reason that he isn't unwell, or bothered by it. I just want to fix it!