Autoimmune Arthritis After Lyme Disease: Could Infection Still Be Present?
Patients who develop systemic autoimmune joint disease following Lyme disease are often treated with anti-inflammatory therapies, including disease-modifying anti-rheumatic drugs (DMARDs). However, an important clinical question remains: could a persistent infection still be contributing to symptoms?
Treatment Approaches After Lyme Disease
In one study, patients with autoimmune arthritis following Lyme disease were treated with a range of therapies, including:
- Nonsteroidal anti-inflammatory drugs (NSAIDs) (20%)
- Steroids (3%)
- DMARDs (57%), most commonly methotrexate
- Biologic agents, including TNF inhibitors
These treatments are designed to reduce inflammation and slow disease progression.
Assumptions About Infection Clearance
In this cohort, all patients had previously received antibiotic treatment consistent with standard recommendations, often including a 21-day course of doxycycline and, in some cases, additional therapy.
The treatment approach was based on the assumption that the infection had been adequately treated.
Ongoing Uncertainty
Determining whether infection has fully resolved can be challenging.
Studies have described patients with persistent symptoms following treatment, including neurologic manifestations and Post-Treatment Lyme Disease Syndrome (PTLDS).
These findings highlight the complexity of distinguishing between post-infectious inflammation and ongoing infection.
Why This Matters for Treatment
Immunosuppressive therapies—including steroids and DMARDs—reduce immune system activity.
If an active infection is still present, these treatments could theoretically affect the body’s ability to control it.
Biologic DMARDs, in particular, have been associated with an increased risk of serious infections in other clinical settings.
Clinical Perspective
Before initiating immunosuppressive therapy, it may be important to carefully evaluate for evidence of ongoing infection.
This includes reviewing clinical history, symptom patterns, prior treatment response, and available laboratory data.
In complex cases, shared decision-making can help patients understand the potential risks and benefits of different treatment approaches.
Patients may benefit from understanding Lyme arthritis, reviewing testing limitations, and considering persistent symptoms when treatment decisions are unclear.
Frequently Asked Questions
Can Lyme disease lead to autoimmune arthritis?
Some patients develop inflammatory joint disease following Lyme disease, though the exact mechanisms remain under study.
How do doctors know if infection has cleared?
There is no single test that definitively confirms eradication, making clinical judgment important.
Are DMARDs safe after Lyme disease?
They may be appropriate in selected cases, but clinicians often consider the possibility of ongoing infection before starting immunosuppressive therapy.
References
- Arvikar SL et al. Arthritis Rheumatol. 2016.
- Logigian EL et al. N Engl J Med. 1990.
- Weitzner E et al. Diagn Microbiol Infect Dis. 2016.
- Jowett N et al. Laryngoscope. 2016.
- Dattwyler RJ et al. Lancet. 1988.
- Steere AC et al. N Engl J Med. 1985.
- Singh JA et al. Lancet. 2015.
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
Hi, apart from facial palsy, what other reasons are there for not using steroids in Lyme disease (especially if they make u feel good)?
There are concerns that steroids might suppress the immune system making it more difficult to treat Lyme disease. The blog lists a couple examples.
Dr. Cameron,
I’ve been with LD/LA since 1982. First dx’d by two-tier antibody testing well after acute severe multi-systemic illness. Innumerable hospitalizations. All complications. Still clinically symptomatic for LA and high antibody IgG to Bb.
I agree with your concerns regarding the use of DMARDS in a given subset of patients who may be still infected with viable Bb, but in any instance verifiable post-treatment infection with viable organisms does not seem to be the norm.
Some good and recent forward thinking peer research trends toward the stronger probability that persistent and specific late symptoms accompanied by often high IgG titer levels to Bb in serum are related to a complicated interplay of host genetics, severity of initial infection, and autoimmune phenomena. Not ongoing infection in the traditional sense if one excludes so-called biofilms or cellular detritus.
Therefore, an ideal and potentially very important pilot study may involve the use of therapeutic immunomodulatory interventions such as IVIG alone and in combination with broad spectrum antibiotics, as opposed to treatment of the late and primarily arthritic symptoms by way of DMARDS or biologic immunosuppressive agents.
We know a great deal about this disease and can practically effect a cure in most patients. Yet there remain very roughly 20 percent of patients like me who require more progressive, but still reason-based therapeutic interventions before all of the scientific details have been thoroughly elucidated.
We need these kinds of conversations.
Seeking information for TNF inhibitor use for Post Treatment Lyme Disease Syndrome and other treatments or clinical trials to treat progressing degenerative spinal discs with a back to front curve of thoracic spine & total los of height in last 10 years of 3 inches (from 5’8” to 5’5”); worsening neurological symptoms (neuropathic pruritus with rash, chronic fatigue, difficulty concentrating, memory issues. Severe muscle cramping hands, feet, legs, back
I rely on rheumatologist to determine if a TNF inhibitor might be effective. I am focused on whether there might be an antibiotic solution for PTLDS.
How would you know whether there are still active Lyme bacteria following antibiotic therapy? What test or tests would you do to determine this?
Thanks
I have not found tests that help determine if the infection has cleared.
Thank you for all you do Dr. Cameron.
I was bitten by a tick in late 2021 and became ill a few months later. I ended up in the ER for facial palsy and fever but was sent to a Rheumatologist for work up. I tested positive for lyme a few weeks ago and have been taking doxycycline for 10 days. My concerns are that I have been taking azathioprine (among other DMARDs) for the last year, dispite me asking..”could this be lyme?” I was an avid runner who worked full time while studying and volunteering part time, and now am in constant pain. I have significant arthritis and ongoing swelling of joints. I have sporadic fever, low mood and vision problems. I am very worried about the immune suppression over the last year and that I will not fully recover. I have been prescribed oral doxycycline for 28 days. How will I know if it is working? How long will it take for me to feel better? I immediately stopped azathioprine when I was positive for lyme but there has been no improvement in joint pain (and may actually be worse). I seem to be aching all over now, whereas it was mostly my legs before.
I am in Toronto On, Canada. Any suggestions or advice you could offer would be greatly appreciated!
I have had success in prescribing other antibiotics including Malarone for Babesia. I advise my patients to work with the rheumatologist at the same time. i am now familiar with the doctors in Toronto.