a child who developed a rash covering a portion of their body? If so what was the diagnosis? My dd has developed a rash out of nowhere..It started this morning and seems to be spreading. There has been no changes in anything she eats, drinks, or uses. No new detergent, body wash, or lotion. She got a flu shot Thursday but i dont think that would cause a rash 2 days later. she has no fever and doesnt act differently. Can anybody help? I want to take her to express care because there is no reason for it, but at the same time the only symptom she has is the rash. She also has had a runny nose for the past 4 days.