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Has she been around anyone with cold-like symptoms?
Any other symptoms, in particular a rash anywhere else on her body?
Does your child's rash resemble these images?
I notice you've gone offline, so I'll leave my thoughts.
A red rash affecting the upper cheeks is often called a malar rash.
Here are causes of malar rash that may not involve a fever: contact dermatitis; seborrheic dermatitis; tinea faciale; systemic lupus erythematosus; acnea rosacea (usually seen in adults); impetigo.
These other malar rash causes may involve a fever: fifth disease, or human parvovirus B19 infection (a mild case may not involve a fever); Lyme disease; cellulitis; necrotizing fasciitis; erysipelas; dermatomyositis; angioedema.
She has not been around anyone with a cold that I am aware of.
Her nose/cheek redness is not a rash form. It resembles a look of someone who has received wind burn, except it is not shiny or heated when touched. Her skin remains smooth and not scaly.
My first diagnostic thought was a mild case of fifth disease, as this commonly affects children, while my second consideration was lupus if there was a family history of this condition. Your pediatrician will perform a careful exam and perhaps consider lab tests to narrow these numerous possibilities.