My child was diagnosed with Roseola yesterday and the doctor said that she will develop a rash after the fever goes away but she woke up this morning with a rash while she still had a fever. Could this still be Roseola or do I need to take her back into the doctor's office for a re-check?

Optional Information:
Female, Age: 9 months, Texas

Already Tried:
she is taking tylenol for fever