So I had all the symptoms of lyme disease, and noticed the bulls-eye rash on the back of my knee. I went to a doctor and got a blood test taken for lyme. I got antibiotics for lyme. the next day I had an especially bad fever, so the next morning my parents brought me to a lyme specialist, who said he was sure I must have lyme based on what I was describing as symptoms, and looking at my rash.

I got the blood tests back today and they were negative! I know that the tests can be wrong, but is it possible that there is some other disease that could be giving me the bulls eye rash and lyme symptoms? thanks.

No. Lyme is the only thing that causes a bull's eye rash. Here's a good article that talks about the unreliability of Lab tests for Lyme. canlyme.com/labtests.html. It's a little technical. but I think you'll get the gist of it. do your doctor a favor and give him a copy of it. In medicine, you never stop learning. So keep taking those antibiotics and make sure you finish them.

There are a 2 or 3 different types of tests for lyme. maybe you should have a different kind. Hope you didn't stop your antibiotics, just in case the test was wrong.