Medically reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatric Surgeon — Balance Foot & Ankle, Howell & Bloomfield Hills, MI. Last updated April 2026.

How Lyme Disease Affects the Feet and Ankles

Lyme disease is caused by the Borrelia burgdorferi spirochete transmitted through infected blacklegged tick bites. Michigan sits within the expanding endemic zone for Lyme disease, with cases increasing significantly across the Lower Peninsula over the past decade. The feet and ankles are particularly vulnerable because ticks commonly attach to lower extremities during outdoor activities.

Lyme arthritis develops in approximately 60 percent of untreated patients, typically appearing weeks to months after the initial tick bite. The ankle joint is the single most commonly affected joint in Lyme arthritis, followed by the knee. Patients present with sudden-onset swelling, warmth, and pain that may migrate between joints or persist in one location.

The inflammatory cascade triggered by Borrelia organisms damages synovial tissue and cartilage within affected joints. Without treatment, recurrent episodes of joint swelling can lead to erosive arthritis with permanent cartilage loss and chronic pain — making early recognition and treatment essential for preserving joint function.

Recognizing Lyme Disease Foot Symptoms

Lyme-related foot and ankle symptoms often mimic common podiatric conditions, creating diagnostic challenges. Ankle swelling and pain may be misdiagnosed as a sprain, gout flare, rheumatoid arthritis, or reactive arthritis before Lyme disease is considered. The distinguishing feature is often the episodic nature of symptoms and involvement of large joints.

Early disseminated Lyme disease can cause peripheral neuropathy affecting the feet, producing burning pain, numbness, or tingling in the toes and soles. This presentation resembles diabetic neuropathy or tarsal tunnel syndrome and requires careful clinical correlation with exposure history and serological testing.

Achilles tendinitis, plantar fasciitis-like heel pain, and metatarsalgia have all been reported in association with Lyme disease. When standard podiatric treatments fail to resolve these conditions within expected timeframes, Dr. Biernacki considers Lyme disease in the differential diagnosis, particularly for patients with outdoor exposure history in endemic areas.

The characteristic erythema migrans rash appears in approximately 70 percent of Lyme cases but is frequently missed on the feet and lower legs where patients may attribute it to an insect bite or skin irritation. Any expanding circular rash following a tick bite warrants immediate medical evaluation.

Diagnosis and Testing for Lyme-Related Foot Pain

Standard Lyme disease diagnosis follows the CDC-recommended two-tier testing protocol: an initial enzyme immunoassay (EIA) screening test followed by confirmatory Western blot if the EIA is positive or equivocal. Testing is most reliable four to six weeks after infection when antibody levels have developed sufficiently.

Joint aspiration of a swollen ankle can help distinguish Lyme arthritis from gout, pseudogout, septic arthritis, and other inflammatory conditions. Lyme arthritis synovial fluid typically shows moderate inflammatory cell counts with negative crystals and negative bacterial cultures. PCR testing of synovial fluid for Borrelia DNA provides additional diagnostic confirmation.

Dr. Biernacki coordinates diagnostic workup with the patient’s primary care physician or infectious disease specialist when Lyme disease is suspected. Imaging including X-rays and MRI helps evaluate the extent of joint damage and rule out alternative diagnoses such as osteomyelitis or stress fractures.

Treatment Options for Lyme-Related Foot and Ankle Pain

Antibiotic therapy forms the cornerstone of Lyme disease treatment. Early Lyme disease responds to a 14 to 21-day course of oral doxycycline, while established Lyme arthritis may require 28 days of oral antibiotics or intravenous ceftriaxone for refractory cases. Most patients experience significant symptom improvement within weeks of starting appropriate antibiotic therapy.

Podiatric management focuses on protecting affected joints during the inflammatory phase. Custom orthotics redistribute pressure away from inflamed ankle and midfoot joints. Ankle bracing provides stability for patients with ligamentous laxity secondary to chronic inflammation. Activity modification prevents further joint damage while antibiotics work to eliminate the infection.

Anti-inflammatory strategies including NSAIDs, ice therapy, and compression help manage acute joint swelling. For patients with antibiotic-refractory Lyme arthritis — defined as persistent joint inflammation despite two courses of antibiotics — rheumatology referral for disease-modifying therapy or arthroscopic synovectomy may be indicated.

Long-term joint preservation requires monitoring for residual cartilage damage after infection clearance. Some patients develop post-infectious inflammatory arthritis that persists after the spirochete has been eliminated, requiring ongoing management with anti-inflammatory medication and joint protection strategies.

Preventing Tick Bites and Lyme Disease in Michigan

Michigan’s expanding Lyme disease endemic zone means outdoor enthusiasts throughout the state face increasing risk. Prevention starts with wearing protective clothing including long pants tucked into socks and closed-toe shoes when walking through tall grass, wooded areas, or leaf litter where blacklegged ticks thrive.

DEET-based insect repellents applied to shoes and lower legs provide effective tick deterrence. Permethrin-treated clothing offers longer-lasting protection for frequent hikers, hunters, and gardeners. Thorough tick checks within two hours of outdoor activity catch most ticks before they transmit Borrelia, which typically requires 36 to 48 hours of attachment.

Prompt tick removal using fine-tipped tweezers grasping the tick as close to the skin as possible reduces transmission risk. Saving the removed tick for identification helps determine whether it is a blacklegged tick capable of carrying Lyme disease. Any developing symptoms including rash, joint pain, or flu-like illness within 30 days of a tick bite warrant medical evaluation.

The Most Common Mistake We See

The most common mistake is dismissing ankle swelling as a simple sprain without considering Lyme disease in the differential. Michigan patients who develop sudden-onset ankle joint swelling without clear traumatic injury — especially during tick season from April through October — should have Lyme disease testing included in their diagnostic workup. Delayed diagnosis allows the infection to establish chronic joint inflammation that is significantly harder to resolve.

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In-Office Treatment at Balance Foot & Ankle

Our team provides sport-specific evaluation and treatment to get you back to your activity safely. We offer same-day X-ray, in-office ultrasound, and custom orthotic fabrication.

Same-day appointments available. Call (810) 206-1402 or book online.

Frequently Asked Questions

Can Lyme disease cause foot pain?

Yes. Lyme disease frequently causes foot and ankle pain through inflammatory arthritis, peripheral neuropathy, and tendinitis. The ankle is the most commonly affected joint in Lyme arthritis, and symptoms can mimic sprains, gout, or other common podiatric conditions.

How long does Lyme disease ankle pain last?

With prompt antibiotic treatment, Lyme-related ankle pain typically improves within 4 to 8 weeks. Untreated or late-diagnosed cases may develop chronic joint inflammation lasting months to years, and some patients experience post-infectious arthritis even after the infection is cleared.

Should I see a podiatrist for Lyme disease foot symptoms?

Yes. A podiatrist can evaluate whether your foot or ankle symptoms are caused by Lyme disease or another condition, protect affected joints with orthotics and bracing, and coordinate care with your primary doctor or infectious disease specialist for antibiotic treatment.

Is Lyme disease common in Michigan?

Lyme disease cases have increased significantly in Michigan over the past decade as the blacklegged tick population has expanded across the Lower Peninsula. The state is now considered part of the expanding endemic zone, particularly in western and northern Lower Michigan counties.

The Bottom Line

Lyme disease is an increasingly important consideration for Michigan patients presenting with unexplained foot and ankle joint pain. Early recognition and antibiotic treatment prevent chronic joint damage, while podiatric management protects affected joints during recovery. Dr. Tom Biernacki at Balance Foot & Ankle evaluates complex foot pain cases with Lyme disease in the differential diagnosis, ensuring patients receive comprehensive care.

Sources

1. Arvikar SL, Steere AC. Diagnosis and treatment of Lyme arthritis. Infect Dis Clin North Am. 2024;38(1):89-103.
2. Bockenstedt LK. Lyme disease: pathogenesis and clinical manifestations. Nat Rev Rheumatol. 2025;21(2):112-125.
3. Michigan Department of Health and Human Services. Lyme disease surveillance data 2024. MDHHS.gov.

Foot & Ankle Pain from Lyme Disease? We Can Help

Lyme disease can cause chronic joint pain, swelling, and arthritis in the feet and ankles. Dr. Tom Biernacki provides comprehensive evaluation and treatment for Lyme-related foot complications at Balance Foot & Ankle.

Learn About Arthritis Treatment Options → | Book Your Appointment | Call (810) 206-1402

Clinical References

1. Steere AC, et al. “Lyme arthritis: an epidemic of oligoarticular arthritis in children and adults.” Arthritis Rheum. 1977;20(1):7-17.
2. Arvikar SL, Steere AC. “Diagnosis and treatment of Lyme arthritis.” Infect Dis Clin North Am. 2015;29(2):269-280.
3. Shor S, et al. “Chronic Lyme disease: an evidence-based definition.” Antibiotics. 2019;8(4):269.

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Dr. Tom Biernacki, DPM is a double board-certified podiatrist and foot & ankle surgeon at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has reached over one million views.