Can Lyme Disease Cause Joint Pain and Arthritis? What Patients Should Know
Lyme disease can cause joint pain, swelling, and arthritis—sometimes mistaken for other conditions. Symptoms may come and go or affect different joints over time.
Joint pain that moves.
Swelling that comes and goes.
Tests may not give clear answers.
Many patients first notice Lyme disease through joint symptoms.
But the pattern often doesn’t look like typical arthritis.
Can Lyme Disease Cause Arthritis?
Yes. Lyme disease can lead to inflammation in the joints, most commonly affecting large joints such as the knee.
However, Lyme arthritis often behaves differently than other types of arthritis.
- May affect one joint, then another
- Swelling can appear suddenly
- Symptoms may improve, then return
This shifting pattern can delay diagnosis.
Common Lyme Arthritis Symptoms
- Joint pain in knees, shoulders, or hips
- Visible joint swelling (especially knee)
- Migrating joint pain
- Muscle aches (myalgia)
- Neck stiffness
- Back pain
- Tendon or ligament discomfort
Learn more about broader musculoskeletal symptoms of Lyme disease.
Why Lyme Joint Pain Is Often Misdiagnosed
Lyme arthritis can resemble:
- Osteoarthritis
- Rheumatoid arthritis
- Fibromyalgia
- Sports injuries
Patients are often evaluated within one specialty at a time.
This can miss the bigger pattern of a multisystem illness.
See Lyme disease misdiagnosis.
How Lyme Arthritis Differs from Other Conditions
There are several clues that suggest Lyme disease:
- Symptoms that move between joints
- Periods of improvement followed by relapse
- Associated symptoms like fatigue or brain fog
Not every patient fits a classic pattern.
That variability is part of the challenge.
Lyme Arthritis in Children
In children, Lyme arthritis often presents as a swollen knee.
This may occur without severe pain—making it easy to overlook.
When Joint Symptoms Become Persistent
Some patients develop ongoing or recurrent joint symptoms.
This is more likely when Lyme disease is diagnosed late.
Learn more about persistent Lyme disease mechanisms.
Clinical Takeaway
If joint pain doesn’t follow a typical pattern, Lyme disease should be considered.
Especially when symptoms move, fluctuate, or don’t respond to standard treatments.
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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
