When her rash wouldn't clear up last time I tried Daktozin (thanks to one of your old posts Negrita ) and it cleared it up well however this time sudocream is clearing it up.

She doesn't really eat any citrus so it wouldn't be that. I think the water might be a good starting point as she used to eat small amounts of food and never reacted where the water has definately changed, so maybe I need to invest in a purifier, off to send some money... I will let you know how we go.

Thankyou everyone for your responces.
Glad to hear an old post helped - hope you can figure out what's causing it, goodluck!!