Quoting Andi+Andy=Marley+1:" Sometimes viruses linger or it could be a new virus (that she didn't get sick from). Is the rash her ... [snip!] ... Is the rash her only symptom? My DD got hives all the time from viruses (though she would never get sick) when she was younger."
Yes the hives are her only symptom. She has never had hives before. She has had a few rashes (yeast rashes, Roseola) she had a slight rash for 2 days after her fever broke but she hasn't had anything since until 3 days ago. They started off as what looked like bug bites all over her abdomen now she has the patchiness that hives look like.