My Doctor Wants to Give Me Steroids—Will That Make Lyme Disease Worse?

It’s a fair concern. Steroids are widely used to reduce inflammation, but they come with important risks when used during an active infection—especially Lyme disease. The conversation is often oversimplified or brushed aside.

Steroids and Lyme disease can be a risky combination when infection is active, because steroids suppress the immune response needed to control Borrelia.

So today, let’s break it down—in the form of a clinical dialogue.

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A Clinical Dialogue on Steroids in Lyme Disease

Cameron: One of my patients was prescribed steroids for joint pain—before anyone tested for Lyme. She asked me, “Could that have made things worse?”

Colleague: That happens more often than people think. Steroids are a go-to for inflammation, but they suppress the immune system.

Cameron: Exactly. And that’s the issue—if Lyme disease is active, steroids can suppress the immune response needed to control infection.

Colleague: So instead of helping, it may allow Borrelia to spread more deeply?

Cameron: That’s the concern. Some patients develop persistent neurologic symptoms after receiving steroids before Lyme disease was recognized and treated. Animal studies and clinical reports support this risk.

When symptoms such as joint pain, facial palsy, or neurologic changes are present, clinicians should consider Lyme disease symptoms before starting immunosuppressive therapy.

Colleague: Do the guidelines address this?

Cameron: Yes. Both IDSA and ILADS advise caution. IDSA recommends avoiding steroids in active Lyme arthritis unless antibiotics have already been used and infection is no longer active. ILADS goes further, warning that steroids may worsen infection if used before appropriate antimicrobial treatment.

Colleague: So it’s not a flat “never”—but it’s a strong caution?

Cameron: Exactly. If Lyme hasn’t been ruled out, starting steroids blindly can lead to worse outcomes.

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What the Research Shows

• Animal studies (Barthold et al., 1990) show worse Lyme arthritis when steroids are given without antibiotics
• Clinical case reports link early steroid use to worse neurologic and joint outcomes
• Logigian et al., 1990 (NEJM): patients with neurologic Lyme improved with IV antibiotics after prior progression
• IDSA Guidelines: recommend avoiding corticosteroids in active infection
• ILADS Guidelines: warn steroids may exacerbate infection if Lyme is untreated

Understanding testing limitations is essential, as early Lyme disease may not be detected with standard testing.

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Why Clinical Judgment Still Matters

• Steroids suppress immunity—and Borrelia can exploit that
• Some patients worsen after steroid exposure
• Autoimmune diagnoses may be considered before infection is fully evaluated
• Both major guidelines emphasize caution without antibiotic coverage

These risks are particularly important in neurologic Lyme disease, where symptoms may already reflect central nervous system involvement.

Coexisting infections, including coinfections, may further complicate the clinical picture.

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What I Do Instead in My Practice

• I delay steroids until Lyme disease is ruled out or actively treated
• I take a detailed history of tick exposure, rash, and systemic symptoms
• If Lyme disease is likely, I begin antibiotics first
• I use steroids only with caution—and typically after treatment has started
• I monitor closely for worsening if steroids are introduced

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Final Thoughts

Steroids have an important role in many conditions, but in Lyme disease, timing matters.

Using steroids before identifying or treating infection may worsen outcomes by suppressing the immune response.

When Lyme disease is part of the differential diagnosis, careful evaluation and appropriate treatment should come first.

In uncertain cases, it is reasonable to pause and ask: Could this be Lyme disease?

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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