it is probably something minor and easily treatable but it sounds like more than a common cold. i would definitely take her to the doctor and keep giving her the benadryl. make sure you keep plenty of benadryl on hand even when they aren't sick and i would definitely want to take her to the doctor to have that rash looked at
is it serious when a child gets a rash with a cold? . my son got it first but only got the rash at bedtime we treated it with hydrocortizone cream. my daughter has 'the same cold' but got the rash last night and it only goes away when we give her benidryl (sp). should i go to the hospital or keep treating her at homer? she moves around like nothing is wrong when she has tylenol and benadryl.