I was 14 when I started experiencing Lyme symptoms. I had a fever that climbed to 104 over the course of 2 weeks, and increasingly worse joint pain/inflamation in my neck. It got so bad I couldn't even move it the small amount required to see the sides of my computer monitor. Luckily my pediatrician knew her shit; I hadn't even left the waiting room before she had diagnosed me with Lyme disease, and I started on antibiotics before I even had blood drawn to send to the lab. That's how little confidence medical providers who know the disease have in the test.

I still suffer from lingering neck pain, but I consider myself incredibly lucky.

EDIT: For the record, I never had the rash. Many people either don't get it or don't notice it