Is it normal for kids to get nappy rash when they're ill with other things? My toddler's had a flu-like illness for about a week and seems to be in the worst part of it with a fever and real exhaustion. She also has quite a bad nappy rash -- several big red spots on her bottom. She's never had this before and we're changing her just as often, also she doesn't have an upset tummy. Is there a reason why she might have nappy rash suddenly linked to the illness, or is it just a coincidence?