What happens if Lyme disease is left untreated?

Untreated Lyme disease can cause a range of health issues over time. Joint Problems: One of the common problems is arthritis, especially in children, which can cause swelling and pain in the knees and other large joints. Heart and Nerve Issues: It can also lead to problems with the heart and the nervous system. Some people may experience heart rhythm problems or issues with memory and concentration. Long-term Effects: If not treated, these problems can become more severe and harder to manage. It is important to seek medical help if you think you have Lyme disease to prevent these complications.