Conversation so far:
What is Lyme disease?
Lyme disease is a bacterial infection you get from the bite of an infected tick. The first symptom is usually a red rash, which may look like a bull's eye.
How do you get Lyme Disease?
To contract Lyme disease, an infected deer tick must bite you. The bacteria enter your skin through the bite and eventually make their way into your bloodstream.
How does Lyme Disease make you feel?
Joint pain and stiffness, often intermittent, are early Lyme symptoms. Your joints may be inflamed, warm to the touch, painful, and swollen.

Question: What happens if it goes untreated
Self-contained rewrite: What happens if Lyme Disease goes untreated?