When Lyme Symptoms Persist, Many Physicians Modify Treatment

Many Lyme disease patients recover after treatment
Others continue to experience persistent symptoms
Research shows many physicians modify treatment when symptoms remain

Many patients recover after standard treatment for Lyme disease. However, some continue to experience persistent Lyme symptoms, including fatigue, joint pain, muscle pain, brain fog, memory problems, dizziness, sleep disturbances, and reduced quality of life.

When symptoms persist after treatment, physicians face a difficult question: should they observe and wait, or should they modify the treatment plan in an effort to improve the patient’s condition?

Several studies have examined both the frequency of persistent symptoms and how physicians respond when patients do not fully recover.

More Than Half Had Not Consistently Returned to Their Usual Health

Investigators at Johns Hopkins University School of Medicine reported that 11 patients, or 14.47%, met the study’s criteria for Post-Treatment Lyme Disease Syndrome (PTLDS) at either the 6- or 12-month follow-up visit after receiving a single 3-week course of doxycycline.¹

An additional 29 patients, or 38.16%, remained symptomatic but did not meet the study’s criteria for PTLDS. Only 36 patients, or 47.37%, had returned to their usual health at both the 6- and 12-month follow-up visits.¹

More than half of the study participants had not consistently returned to their usual health at the 6- and 12-month follow-up assessments.

These findings illustrate that symptoms can persist after recommended treatment, even among patients diagnosed and treated during early Lyme disease.

Patients with persistent Lyme disease symptoms may continue to experience fatigue, cognitive difficulties, pain, sleep disturbances, dizziness, and limitations in daily functioning.

Many Physicians Modify Treatment When Symptoms Persist

While some treatment guidelines emphasize observation after standard therapy, a large health insurance claims analysis found that some physicians modify treatment plans when Lyme symptoms persist.³

Researchers identified 488 physicians who prescribed extended courses of antibiotics to patients evaluated for Lyme disease. Among patients treated by these physicians, approximately 18% received extended-course antibiotic therapy, with an average treatment duration of 86 days.³

Among extended-course treatment episodes, physicians sometimes changed the regimen: 43% involved switching antibiotics, while 18% involved combination antibiotic therapy.³

The insurance claims study could describe prescribing patterns, but it was not designed to determine whether extended, switched, or combination antibiotic regimens improved patient outcomes.

Nevertheless, the findings demonstrate that some physicians do not rely exclusively on observation when patients remain symptomatic. Instead, they modify treatment based on their assessment of the individual patient.

Long-Term Follow-Up Raises Additional Questions

Investigators at New York Medical College followed patients with culture-confirmed early Lyme disease for 11 to 20 years after treatment. They found that approximately 11% met criteria for PTLDS despite receiving treatment for early Lyme disease.²

During the follow-up period, 66.2% of women and 73.7% of men developed intercurrent medical conditions. Hospitalizations were also reported.² However, the investigators did not establish that these conditions or hospitalizations were caused by Lyme disease.

These findings illustrate the complexity of evaluating long-term health after Lyme disease and reinforce the need for continued research into persistent symptoms and recovery.

Why Lyme Disease Treatment Is Not Always One Size Fits All

Lyme disease patients do not all present the same way, respond the same way, or recover at the same pace.

Differences in disease severity, diagnostic delays, co-infections, immune responses, autonomic dysfunction, and other medical conditions may influence recovery. As a result, physicians may rely on clinical judgment when deciding whether a treatment or management plan should be modified.

These observations are consistent with the concept that one size does not fit all in Lyme disease treatment.

Frequently Asked Questions

Why do Lyme symptoms persist after treatment?

Some patients continue to experience fatigue, pain, cognitive difficulties, dizziness, sleep problems, and other symptoms despite standard treatment. The reasons remain an active area of research and may differ among patients.

Do physicians ever change Lyme disease treatment when symptoms persist?

Yes. An insurance claims study found that some physicians extended treatment, switched antibiotics, or used combination antibiotic therapy in patients evaluated for Lyme disease.³ The study examined prescribing patterns but did not determine whether these approaches improved outcomes.

What is PTLDS?

Post-Treatment Lyme Disease Syndrome, or PTLDS, refers to persistent symptoms and functional impairment that continue after recommended treatment for Lyme disease. Specific research definitions may vary.

Are persistent Lyme symptoms common?

Studies have found that a meaningful proportion of patients continue to report fatigue, pain, cognitive difficulties, and other symptoms months after treatment.¹ The percentage varies depending on the patient population and the definition used.

Clinical Perspective

The question is not whether every patient with Lyme disease requires additional antibiotic treatment. Many patients recover after standard therapy.

The challenge is identifying patients who remain symptomatic, considering other possible explanations for their illness, and determining which management strategies are most appropriate. Published claims data show that some physicians modify treatment plans when patients do not recover fully.

Clinical Takeaway

Studies suggest that a substantial number of Lyme disease patients remain symptomatic after standard treatment. Research also shows that some physicians respond by extending treatment, changing antibiotics, or using combination therapy.

These findings reassure patients with persistent Lyme symptoms that they are not alone. They also highlight the need for further research into individualized treatment strategies for patients who do not fully recover after Lyme disease.

Related Articles

Persistent Lyme Disease Symptoms

Post-Treatment Lyme Disease Syndrome (PTLDS)

Recovery From Lyme Disease

Lyme Disease: One Size Does Not Fit All

What Is the Best Treatment for Lyme Disease?

References

1. Aucott JN, Soloski MJ, Rebman AW, et al. CCL19 as a Chemokine Risk Factor for Posttreatment Lyme Disease Syndrome: A Prospective Clinical Cohort Study. Clin Vaccine Immunol. 2016;23(9):757–766.
2. Weitzner E, Visintainer P, Wormser GP. Comparison of males versus females with culture-confirmed early Lyme disease at presentation and at 11–20 years after diagnosis. Diagn Microbiol Infect Dis. 2016;85(4):493–495.
3. Tseng YJ, Cami A, Goldmann DA, DeMaria A Jr, Mandl KD. Incidence and Patterns of Extended-Course Antibiotic Therapy in Patients Evaluated for Lyme Disease. Clin Infect Dis. 2015;61(10):1536–1542.

Dr. Daniel Cameron, MD, MPH
Lyme disease clinician with over 30 years of experience and past president of ILADS.

Symptoms • Testing • Coinfections • Recovery • Pediatric • Prevention