my dd, 18 months has a red sore patch which i thought was nappy rash, but as she has never had it before, i asked a ex- nurse who i know to have a look and she says it might be something to do with thrush. the sore part is mostly on the outer vagina lips (for want of a better word) and a little bit on the tops of her thigh. it is really red and a bit bumpy, and does sometimes have a white bloom on it but i thought this was just the residue of the zinc and castor oil cream i have been using. i tried thet meatnium nappy rash cream but it didnt seem to touch it. do i have to see a health visitor to get it looked at or can i just describe the rash to a chemist, and if it is thrush can i get something over the counter or does it have to be prescribed? anu advice would be appreciated, thank you.