Brain Zaps and Internal Vibrations in Lyme Disease: Why They Happen
Quick Answer: Brain zaps and internal vibrations in Lyme disease are neurologic symptoms linked to central sensitization, autonomic dysfunction, and neuroinflammation. These sensations reflect altered nerve signaling—not anxiety—and often occur during flares or nervous system instability.
The electrical jolts started without warning. Every few minutes, Lisa felt a sudden shock run through her head, like a live wire had touched her brain. The sensation would shoot down her spine, leaving her briefly disoriented, as if her nervous system had misfired. “It feels like my brain is short-circuiting,” she told her doctor. Instead of understanding, she was met with a puzzled look and a suggestion to try stress management.
She wasn’t imagining it. She wasn’t anxious. She was experiencing brain zaps and internal vibrations in Lyme disease and PTLDS — symptoms many patients describe vividly, even though they remain widely misunderstood.
What Brain Zaps and Internal Vibrations Feel Like
Brain zaps often feel like sudden, electric shock–like jolts inside the head. Some describe a bright internal flash, a momentary reboot sensation, or a sharp pulse that radiates into the neck or spine.
Internal vibrations feel more like a deep buzzing or internal shaking, as if the body is trembling on the inside. Some describe a constant humming sensation, especially at night or when the body is still.
Both sensations often intensify during flares, periods of stress, hormonal shifts, weather changes, or transitions between sleep and wakefulness.
Many patients also report worsening symptoms after physical or mental exertion, particularly during periods of fatigue, poor sleep, or autonomic instability.
The Science Behind These Sensations
1. Central sensitization
Following infection or inflammation, the brain and spinal cord can become hyper-responsive. This state, known as central sensitization, can amplify internal signals and create sudden electrical sensations.
2. Autonomic nervous system dysfunction
Lyme disease can affect the autonomic nervous system. When the fight-or-flight response remains overactive, patients may experience internal shaking or buzzing without visible movement.
3. Neuroinflammation
Inflammation associated with Borrelia burgdorferi can alter sensory pathways and nerve signaling thresholds, contributing to abnormal internal sensations.
4. Sleep–wake transition instability
These sensations are often more noticeable when falling asleep or waking up, when brain activity naturally shifts and may feel abrupt in a sensitized nervous system.
Many patients notice these sensations become more pronounced during nighttime awakenings or periods of disrupted sleep.
What the Research Shows
In medical literature, brain zaps are most often described in antidepressant withdrawal, where patients report sudden electrical jolts or internal flashes. This supports the physiologic basis of the experience.
Internal vibrations, sometimes described as internal tremors, have been reported in post-infectious conditions such as Long COVID. These symptoms are associated with dysautonomia, POTS, and small-fiber neuropathy—processes also seen in Lyme disease.
Although Lyme-specific studies may not use the term “brain zaps,” they describe neuropathic firing, sensory hypersensitivity, and autonomic dysfunction. These mechanisms can produce the same sensations reported in other post-infectious conditions.
Why These Symptoms Are Often Dismissed
Patients should not have to prove that these sensations exist. Brain zaps and internal vibrations are recognized neurologic experiences reported across multiple conditions.
Even when MRI scans or nerve studies appear normal, the nervous system may still be inflamed or dysregulated. These changes are not always captured on routine testing.
Symptoms may fluctuate significantly from day to day, leading some patients to feel temporarily improved before symptoms suddenly return during periods of stress, illness, or overexertion. Learn more about why Lyme symptoms come and go.
Understanding these mechanisms helps both patients and clinicians approach these symptoms with clarity rather than dismissal.
Frequently Asked Questions
What causes brain zaps in Lyme disease?
Brain zaps in Lyme disease are linked to central sensitization, neuroinflammation, and autonomic dysfunction — processes that alter nerve signaling thresholds and can produce sudden electrical sensations.
Are internal vibrations in Lyme disease the same as tremors?
Not exactly. Internal vibrations are felt internally without visible shaking. They have been described in post-infectious conditions including Lyme disease, Long COVID, and dysautonomia-related syndromes.
Can brain zaps occur without anxiety?
Yes. In Lyme disease, these sensations often occur without emotional triggers and reflect neurologic rather than psychiatric processes.
Do brain zaps show up on MRI or nerve tests?
Not typically. Standard imaging and nerve conduction studies may appear normal even when the nervous system is dysregulated. Small fiber neuropathy and neuroinflammation are often not captured on routine testing.
Clinical Takeaway
Brain zaps and internal vibrations are neurologic symptoms reflecting altered nervous system signaling — not simply anxiety. They are grounded in recognized physiologic mechanisms including central sensitization, autonomic dysfunction, and neuroinflammation.
Recognizing these patterns as part of Lyme disease and post-infectious neurologic syndromes may help guide more appropriate evaluation and reduce unnecessary dismissal.
Related Articles
- Autonomic Dysfunction in Lyme Disease
- POTS in Lyme Disease
- Is Internal Vibration a Neurologic Problem or Anxiety?
- Can Lyme Disease Cause Internal Vibrations?
References
- Papp A, Onton J. Brain zaps: an underappreciated symptom of antidepressant discontinuation. Prim Care Companion CNS Disord. 2018.
- Papp A. Triggers and characteristics of brain zaps according to the findings of an internet questionnaire. 2022.
- Blitshteyn S, Ruhoy I, Natbony L, Saperstein D. Internal tremor in Long COVID may be a symptom of dysautonomia and small fiber neuropathy. Neurol Int. 2024.
- Zhou T, et al. Internal tremors and vibrations in Long COVID: a cross-sectional study. Am J Med. 2024.
- Oaklander AL, Nolano M. Small-fiber neuropathy and post-infectious neuropathic syndromes. Neurol Clin Pract. 2019.
- Azcue N, et al. Dysautonomia and small fiber neuropathy in post-COVID condition and ME/CFS. J Transl Med. 2023.
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
I have Lyme disease and had brain zaps. The pain radiated from behind my left ear and shot up to the top of my head. They were extremely painful. They occurred about every couple of minutes. Nothing affected them. I got into a neurologist who did a CT scan and found nothing. He called them idiopathic pain and gave me two different pain scripts. I had been experiencing the pain for over a month by this time. The zaps disappeared one day on their own.
I am sorry to hear you suffered. We need more research in this area
I just wrote a substack about this today. It’s so discouraging to have to debate this topic with people. And.. to make it worse.. I have two members of my family (niece and nephew) who are in med school and tell me it’s not a medically proven phenomenon. And a brother in law that worked in pharma for over 30 years that says the same. I’ve always called them “body shocks”.. because I could think of a better term. Reading this has helped me see how there are many others experiencing the same, and battling people telling them they are potentially making it up – or just have anxiety. Also.. NO FUN to go through on top of menopause. If there is any research I can be a part of, I’d like to. https://open.substack.com/pub/clairepickens/p/the-big-game?utm_campaign=post-expanded-share&utm_medium=web
I have not seen any research on the topic other than the psychiatric presentations
Hi Dr. Cameron, I met you at a Lyme Disease Conference in Michigan years ago. I have internal vibrations that are really unsettling. Mine started a year and a half ago in my neck, then traveleded down my spinal cord. They are now sometimes in the whole body. I recently tested positive for Babesiosis and high levels of Ochratoxin-A. Tested positive three times for Lyme disease in the past, but not currently. I appreciate your blog on this topic. I have recently taking up swimming as a low impact yI can tolerate. Every night after I swim I have very active vibrations in my spinal cord. It’s so scary.
I hope you find a path forward
I’m sorry—you’re going through something very unsettling.
Those internal vibrations are something patients with Lyme and coinfections (including Babesia) do report, especially when the nervous system is involved.
The pattern you describe—worsening after activity like swimming—is also something I hear from patients with sensitive or overactive neurologic systems.
You’re not alone in experiencing this, even though it can feel very alarming.
Bonjour, je ressens des vibtations internes au repos dans les mains et pieds.
Ces vibrations ont disparu à Marsa Alam et réapparues à mon retour.
Comment traiter Lyme? Wuel médecin recconu a Genève
My daughter, 12, has brain zaps. She has chronic neurolyme due to too short and insufficient Doxy 7 days 100 mg/day 8 months after bite. No rash. Disulfiram did not touch the brain zaps.
Brain zaps aren’t specific to Lyme and can have multiple causes. Careful reassessment and pediatric neurologic evaluation are important.
Ive been experiencing the electrical sensations going through my jaw. Sounds like I”m fortunate to not have pain associated with any of my Lyme symptoms, although it’s rough as it’s taking a toll on my body to experience the electrical sensations in my head and jaw. I have head tremors and at times it looks like I’m having a seizure with my head shaking back and forth. I’m being treated now by a naturopath and I’m three weeks into it and no relief yet, but I know it’s a process… And I really dislike that the medical field can’t acknowledge this is real. I have been chasing doctors since the summer of 2021 to figure out what was wrong. It all started with a “wavy” feeling in my body. Recently was diagnosed with Mal des embarkment syndrome, but I think it’s from Lyme. The audiologist said I’ve lost some hearing and shortly after those two diagnoses I received the Vibrant panel back showing that I have three different types of borellia and some other tick co-infections. It’s rather isolating trying to navigate the system. I felt really validated reading about this and knowing that I”m not the only one with the electrical sensations.
Hello, I have just been diagnosed with neuro lames myself and im curious to know how do I navigate the process of going through a neurologist who is familiar with this and cam help md with the brain zaps?
I am sorry you are dealing with this. Brain zaps and internal vibration sensations can be difficult symptoms for patients to describe and for clinicians to recognize. In my practice, I encourage patients to work with a neurologist open to evaluating symptoms in the context of tick-borne illness, autonomic dysfunction, small fiber neuropathy, and neuroinflammation rather than dismissing them outright.