I know this is going to come out as a (badly typed) rant so apologies in advance.
My DD has had a fever, diarrhoea and other symptoms like a rash and vomiting (some of then on and off) for over a week. She has had Calpol for the entire time at my GPs recommendation. Then she developed joint pain, really chapped lips, strawberry red tongue covered in blisters and a puffy face. She was screaming in pain at one point. So we've been to the GPs twice and the out of hours once but they keep saying viral infection. I do understand that but surely she should be improving by now? I have done the tumbler test and it's not that sort of rash. My mum used to be a paediatric nurse and when I told her of all of DD's symptoms, she said it sounds just like Kawasaki syndrome. I Wikipedia'd it (dangerous, I know) but there was my daughter's face, with exactly the symptoms. It's rare but can be VERY serious. AIBU to go shooting off up there for for the fourth time, laptop in hand?