My 2yr old woke up with a rash on one side of her body on Monday morning, The Drs didn’t know what was causing it but gave her hydrocortisone 1% and cetraben. They seem to be making it spread. She has no history of eczema, it hasn’t been hot for a heat rash. She’s totally fine in herself, no temperature, it’s not itching or bothering her. Does anyone have any ideas please?