My fourteen month old got a red rash with white splotches earlier today on her face, then it went away shortly after it came. Tonight, there was a similar rash in her diaper area that acted in the same way; it went away shortly after it appeared. Minutes after that rash was seen, another, smaller rash appeared on her face again. This, too, disappeared very shortly after it appeared. What is this and should I take her to the hospital or doctor?