This is Dr. David
I am sorry about your granddaughter.
most rashes on 6 month olds with fever are from viral infections.
some viral infections like epstein barr virus or coscachie virus can last a few weeks in length for infection.
her elevated WBC count is consistent with infection.
her ears need to be checked for fluid.
one option is to try her on a course of peniciillin or amoxicillin and see if that helps the rash and WBC count and fevers.
benadryl pediatric can also be tried as well at night time to help with sleep and see if that helps the rash.
I would try those first before going to a specialist.
let me know if you have other questions.
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