“Chronic Lyme disease” is controversial because the term is used differently by patients and clinicians, and there’s disagreement about its cause and treatment. Most experts recognize Post-Treatment Lyme Disease Syndrome (PTLDS)—persistent symptoms like fatigue, pain, or brain fog after standard therapy for Lyme disease—but evidence for an ongoing active infection in these cases is limited. As a result, major guidelines generally do not support long-term or repeated antibiotic use due to lack of proven benefit and potential risks, while some practitioners believe persistent infection may occur and treat more aggressively. If symptoms continue, it’s best to consult a qualified healthcare provider (such as an infectious disease or rheumatology specialist) to rule out other causes and focus on symptom management, rather than relying on unproven or potentially harmful alternative treatments.