My child has a sudden rash started on the face now spreading to her body.. it doesnt look like blisters it is not red the rash is course like she us 6?

Doctor can evaluate: Rashes are hard to describe in words. Getting a face rash, and then a tummy rash, can be due to a variety of causes. Possibilities include an allergic reaction (such as to a food or medication), or an infection (such as strep throat or a viral infection). A doctor's evaluation is needed to see what the cause or causes might be. She would be vaccinated for chicken pox, measles, and rubella already.