Agree w/ the others
According to the IDSA's guidelines (the STRICTEST), the appearance of the bulls-eye (erythema migrans or EM rash) is all that is required for prohylactic doses of abx.
However, MDs sometimes argue (because of the way the guidelines are written) that this includes a very short period of doses.
So it's a good argument for the PRESENCE of the microbe in the absence of testing or positive tests or an MD who knows what he/she is doing...
Also, the rash topic is pretty confusing. Many rashes look the same and not all are EM. And some EMs look very different than bulls-eye. They can be different shades of red, they can be very small or gigantic. They can come and go (I didn't develop the until after I started abx). It can confuse the best. But with all the information available right now, no other infection can cause a bulls eye (that's probably not entirely true, either but that is the conventional thinking and that can work in our interests, usually).
Sorry if this was already mentioned - please have her take GOOD images of the bite and rash, and mark the perimeter of the rash (with just a few dots so that it's not real obvious) and document w/ photography any growth or changes in the rash. This isn't useful except with MDs who don't really know what they're doing and need more info so the rash info does help.
-p
Post Edited (Pirouette) : 7/20/2017 1:56:41 PM (GMT-6)