Neurologic Lyme Disease: Understanding Nervous System Symptoms
Brain fog that won’t clear?
Dizziness, nerve pain, or strange sensations?
Often missed or misdiagnosed.
Can Lyme disease affect the brain and nervous system? Yes. Neurologic Lyme disease can cause brain fog, dizziness, nerve pain, and autonomic symptoms that often change over time.
A key pattern is fluctuation. Symptoms may come and go, shift between systems, or worsen with stress, fatigue, or exertion.
Patients often say, “My tests are normal—but something feels wrong.”
Start here: Lyme disease symptoms guide
These neurologic Lyme disease symptoms often fluctuate over time. Learn more about why Lyme symptoms come and go.
Neurologic Lyme disease occurs when infection with Borrelia burgdorferi affects the brain, spinal cord, or peripheral nerves.
These symptoms are thought to reflect inflammation and signaling disruption in the nervous system, rather than structural damage alone.
Patients may experience symptoms such as headaches, brain fog, memory problems, dizziness, nerve pain, or facial palsy. Because these symptoms resemble many neurologic conditions, Lyme disease may be overlooked.
In some cases, symptoms resemble other disorders. Learn more about when Lyme disease mimics neurologic disorders.
Neurologic symptoms are often missed early. See delayed Lyme disease diagnosis.
Key Patterns of Neurologic Lyme Disease
A key pattern is overlap. Neurologic Lyme disease typically affects multiple parts of the nervous system at the same time.
1. Cognitive Dysfunction and Brain Fog
Many patients report difficulty with memory, concentration, and processing speed—commonly described as brain fog.
2. Neuropsychiatric Symptoms
A key pattern is mismatch. Symptoms may appear psychiatric but reflect underlying neurologic or inflammatory processes.
Patients may develop anxiety, depression, irritability, or more severe symptoms.
3. Peripheral Neuropathy
A key pattern is abnormal sensation. Patients may experience burning, tingling, or hypersensitivity—even when testing is normal.
Learn more about Lyme disease neuropathy.
4. Autonomic Dysfunction
A key pattern is instability. The autonomic nervous system may be affected, leading to dizziness, palpitations, and exercise intolerance.
See autonomic dysfunction in Lyme disease.
Common Neurologic Lyme Disease Symptoms
- Brain fog and slowed thinking
- Memory problems
- Headaches
- Dizziness or imbalance
- Nerve pain (neuropathy)
- Radicular pain
- Facial palsy
- Sensory disturbances
A key pattern is variability. Symptoms may change location, intensity, or type over time.
These symptoms may reflect neuroinflammation, which can disrupt signaling even when imaging is normal.
Neurologic Lyme disease may present with significant symptoms even when MRI findings are normal.
Why Neurologic Lyme Disease Is Often Missed
A key pattern is misdiagnosis. Symptoms overlap with many neurologic and psychiatric conditions.
Patients may initially be evaluated for multiple sclerosis, migraine disorders, fibromyalgia, or psychiatric illness.
Learn more about Lyme disease misdiagnosis.
Neurologic Symptom Patterns
- Visual symptoms – see eye symptoms
- Autonomic symptoms – see autonomic dysfunction
- Cognitive symptoms – see brain fog
- Peripheral nerve symptoms – neuropathy and abnormal sensations
Clinical Takeaway
Neurologic Lyme disease can affect multiple parts of the nervous system, leading to cognitive, sensory, and autonomic symptoms.
Fluctuation, overlap, and mismatch are key clinical clues.
If these symptoms feel familiar, start with the symptoms guide or review common Lyme patterns to better understand your next steps.
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
