Lyme Disease and EDS: Can Infection Make Symptoms Worse?
EDS GETTING WORSE WITHOUT EXPLANATION?
NEW FATIGUE, POTS, OR BRAIN FOG?
COULD LYME DISEASE BE PART OF THE PICTURE?
Lyme disease and Ehlers-Danlos Syndrome (EDS) can overlap—sometimes leading to worsening symptoms that are difficult to explain by connective tissue dysfunction alone.
“I was told it was just my EDS—but something had changed.”
That’s a pattern I’ve heard more often in recent years—from patients, parents, and clinicians.
EDS is already complex. But when symptoms suddenly worsen—new neurologic issues, increased fatigue, or cognitive decline—it’s worth asking whether something else is contributing.
In some cases, that “something else” is Lyme disease.
What Is Ehlers-Danlos Syndrome (EDS)?
EDS is a group of connective tissue disorders affecting collagen, a key structural protein in the body.
The most common subtype is hypermobile EDS (hEDS), diagnosed clinically rather than through genetic testing.
Common symptoms include:
- Joint hypermobility and instability
- Chronic pain and fatigue
- Autonomic dysfunction (POTS)
- Fragile skin and easy bruising
- GI motility issues
- Headaches and cervical instability
- Proprioceptive deficits
Because EDS affects multiple systems, patients often see multiple specialists before diagnosis.
Limitations of EDS Diagnosis
Hypermobile EDS does not have a confirmed genetic marker.
Diagnosis is based on clinical criteria, including joint hypermobility, systemic features, and family history.
This creates overlap with other chronic conditions, including Lyme disease symptoms and autonomic dysfunction.
As a result, some patients may have more than one condition contributing to their symptoms.
How Lyme Disease Can Complicate EDS
Lyme disease, caused by Borrelia burgdorferi, can affect the joints, nervous system, and brain.
When layered on top of EDS, it may push the body into deeper dysfunction.
1. Joint and Muscular Pain
EDS causes joint instability. Lyme disease adds inflammatory and migratory pain, making symptoms more unpredictable.
2. Fatigue and Exercise Intolerance
Fatigue in EDS may worsen significantly with Lyme disease due to immune activation, co-infections, and sleep disruption.
3. Neurologic and Autonomic Symptoms
Both EDS and Lyme disease can cause dysautonomia. Lyme disease may amplify POTS symptoms and neurologic dysfunction.
4. Cognitive Dysfunction (“Brain Fog”)
Patients may experience worsening memory, focus, and processing speed, similar to Lyme-related brain fog.
5. Mood and Sensory Changes
Lyme disease may contribute to anxiety, insomnia, and sensory sensitivity, particularly when the nervous system is involved.
When to Suspect More Than EDS
Not every EDS patient has Lyme disease. But certain patterns raise concern:
- Sudden decline after outdoor exposure
- Cyclical symptom patterns
- New neurologic or cognitive symptoms
- Unexplained anxiety or sleep changes
- Poor response to standard EDS care
These patterns overlap with Lyme disease misdiagnosis and delayed recognition.
A Case That Illustrates the Overlap
A patient in her mid-20s with hEDS presented with worsening fatigue, dizziness, and cognitive symptoms after a hiking trip.
She had seen multiple specialists, and her symptoms were attributed to EDS progression.
However, testing suggested prior tick exposure. Treatment for Lyme disease and Babesia led to improvement in energy, POTS stability, and cognition.
She still had EDS—but the overlapping infection was addressed.
Clinical Takeaway
Lyme disease does not replace EDS—but it can complicate it.
When symptoms worsen unexpectedly, considering infection as a contributing factor may help clarify the diagnosis.
Recognizing overlapping conditions can change the course of care and recovery.
Frequently Asked Questions
Can Lyme disease worsen EDS symptoms?
Yes. Infection can amplify fatigue, pain, autonomic dysfunction, and neurologic symptoms.
Is hEDS genetic testing reliable?
No. There is currently no confirmed genetic test for hypermobile EDS.
Do EDS and Lyme disease overlap?
Yes. Both conditions can affect multiple systems and share symptoms such as fatigue and dysautonomia.
When should Lyme disease be considered?
When symptoms worsen suddenly, fluctuate, or do not respond to standard EDS care.
Can treatment improve symptoms?
Some patients improve when underlying infections are identified and treated.
Related Reading
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
