is it a radiating rash, or just red raw? - my DD had something very similar but it was radiating and turned out she had a nappy thrush infection. Daktozin cream was FANTASTIC as it is a nappy cream and anti fungal in one. i still use it now when she gets a bad case of nappy rash. her rash started clearing up within 5 hours of using it and by the next morning it was gone.