DS 18m has had a low grade fever since 3am and we have just found a load of spots (doesn't really look like a rash, and the glass test suggests it isn't meningitis) in the area covered by his nappy. The spots are a good few mms across and have a white ring around them like a weal/flare. he's not otherwise showing any signs of illness - just a bit quiet, not crabby or anything like that.
Any ideas, thanks?