@pinkoneblueone Sorry to hear your ds is poorly. This illness is horrible
Ds is mostly fine in himself now. He has a sore throat (again!) and a lymph gland in his neck is up, but he managed a long ish walk and a bit more dinner than usual. Not quite back to 100%, but at least 80%.
Weirdly, ds’s rash started on his elbows too
I’ve put up a pic of his arm - you can see his normal skin colour at the top of his arm compared to the redness everywhere else.
If it helps, even when he had the rash he was healthy-ish. Still quite fatigued but much better than the week before when he’d been in bed-bound with the fever and cough. The rash only lasted about 36 hours from the first spots/redness appearing so I hope it’s out of the way soon for your ds too.
The gp asked questions about red or swollen eyes, and redness or skin peeling on soles of feet and palms so that might be something to look out for.
What he emphasised was to be really low tolerance for any new symptoms and to call back to the gp if I was worried about my change, no matter how small. So definitely stay in touch with your gp/111 if you’re worried, but I hope your ds will be like mine and will stay out of hospital and recover well at home 
Sorry for rambling a lot, feel free to ask me anything if I’ve missed it or it doesn’t make sense 