Awful weekend - Help?! Any idea what it might be?

[Mrs Dot]

https://www.babyandbump.com/toddler...ekend-help-do-you-know-might.html#post8807139

 

[mandzzzz]

I think it was a bug xx

 

[Mrs Dot]

I think he's got whatever we've had but it doesn't explain the wierd rash?