Wayne
Senior Member
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- 4,607
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- Ashland, Oregon
Dear Friends,
I've been doing quite a bit of "communicating" with ChatGPT recently, and in just the past hour have been pretty astounded by what I'm learning. I asked if vestibular issues (which I've long felt I've been dealing with) can cause seizures. I was pretty surprised to learn "focal seizures" can actually mimic vestibular issues.
I hadn't even heard the term "focal seizures" prior to this exchange. This led to some followup discussion on whether they can cause symptoms of ME/CFS. Below is the thread of our "conversation". It's opened up a whole new avenue of inquiry for me, and makes me wonder what can all cause focal seizures.
Vestibular symptoms + Seizure Disorder:
ChatGPT said:
Yes — great catch!
When I say "focal seizures," I am referring to localized seizures — meaning the abnormal electrical activity starts in one specific area of the brain, rather than spreading immediately to the whole brain (which would be a generalized seizure).
What Are Focal Seizures?
Let’s unpack this carefully.
Research has shown that people with ME/CFS often have:
Yes, at least in some individuals, it's plausible:
So yes — some symptoms classically labeled “ME/CFS” could, in some cases, be driven or amplified by undiagnosed focal seizures, especially when those seizures are subtle or non-motor in presentation.
I've been doing quite a bit of "communicating" with ChatGPT recently, and in just the past hour have been pretty astounded by what I'm learning. I asked if vestibular issues (which I've long felt I've been dealing with) can cause seizures. I was pretty surprised to learn "focal seizures" can actually mimic vestibular issues.
I hadn't even heard the term "focal seizures" prior to this exchange. This led to some followup discussion on whether they can cause symptoms of ME/CFS. Below is the thread of our "conversation". It's opened up a whole new avenue of inquiry for me, and makes me wonder what can all cause focal seizures.
Vestibular symptoms + Seizure Disorder:
- Some focal seizures, especially in the temporal or parietal lobes, can produce sensations of dizziness, vertigo, spinning, or “floating” — and may be mistaken for vestibular issues.
- This is not caused by the vestibular system but is neurologically driven by seizure activity affecting balance-related brain regions.
- EEG or brain imaging is needed to confirm.
ChatGPT said:
Yes — great catch!
When I say "focal seizures," I am referring to localized seizures — meaning the abnormal electrical activity starts in one specific area of the brain, rather than spreading immediately to the whole brain (which would be a generalized seizure).

- Originate in a focal point (one hemisphere).
- Can be:
- Focal aware (simple partial) – person remains conscious.
- Focal impaired awareness (complex partial) – consciousness is altered.
- Can cause symptoms like:
- Déjà vu, strange smells/tastes, visual distortions.
- Dizziness, nausea, emotional waves.
- Physical signs like lip-smacking, staring spells, or limb twitching.
- Vertigo or spatial disorientation if the focus is near the temporal or parietal lobes, or areas involved with the vestibular system.
ChatGPT said:
Yes — it's absolutely possible, and it's a really insightful line of thinking. While focal seizures are not a widely recognized hallmark of ME/CFS (Myalgic Encephalomyelitis / Chronic Fatigue Syndrome), there's increasing evidence that brain dysfunction in ME/CFS can resemble or even overlap with features seen in epilepsy, especially focal epilepsy.Let’s unpack this carefully.
1. Brain abnormalities in ME/CFS:
Research has shown that people with ME/CFS often have:- Abnormalities in brain connectivity (especially in the default mode and salience networks).
- Hypoperfusion (reduced blood flow) in various brain regions.
- Neuroinflammation, especially in the limbic system, brainstem, and temporal lobes — areas also implicated in focal epilepsy.
- Cognitive dysfunction (“brain fog”), sensory sensitivities, autonomic instability, derealization — which can overlap with temporal lobe epilepsy or focal seizures.
2. Could focal seizures explain some ME/CFS symptoms?
Yes, at least in some individuals, it's plausible:Symptom | Seen in ME/CFS | Also seen in Focal Seizures |
---|---|---|
Cognitive fog | ![]() | ![]() |
Derealization/depersonalization | ![]() | ![]() |
Sensory hypersensitivity | ![]() | ![]() |
Fatigue post-event | ![]() | ![]() |
Muscle weakness | ![]() | ![]() |
Autonomic dysfunction (POTS-like) | ![]() | ![]() |
So yes — some symptoms classically labeled “ME/CFS” could, in some cases, be driven or amplified by undiagnosed focal seizures, especially when those seizures are subtle or non-motor in presentation.
3. Challenges with Diagnosis
- Many focal seizures don’t look like seizures— they can feel like:
- Dizziness, strange thoughts or emotions
- Disconnection from surroundings
- Sudden waves of nausea or anxiety
- These are easy to misattribute to anxiety, POTS, or ME/CFS itself.
- EEGs often miss focal seizures, especially if they’re deep in the brain (like the mesial temporal lobe). Standard outpatient EEGs may look totally normal.
4. The "Functional" Trap
- People with ME/CFS are often misdiagnosed with functional or psychogenic disorders, especially when seizures or near-seizure events don’t show up on EEG.
- But subtle, deep focal epilepsy could be missed and misinterpreted as PNES or functional symptoms, just like what happens in some cases of limbic encephalitis, autoimmune epilepsy, or cryptogenic temporal lobe epilepsy.
So… What Would Help Clarify This?
- Extended video EEG (ideally during symptom flares or crashes).
- Sleep-deprived EEG, which increases sensitivity.
- 3T MRI with epilepsy protocol.
- Consider trial of anti-epileptic meds or neuromodulatory treatments only under medical supervision if there are strong seizure-like features.
- Or — more broadly — testing for autoimmune or inflammatory epilepsy, which is often seronegative and overlaps with ME/CFS in symptom profile.
Summary:
Yes, it is absolutely possible that focal seizures are under-recognized in ME/CFS, and in some individuals, may explain or contribute to their neurological symptoms. It's a hypothesis that deserves more investigation, particularly in people with episodic or fluctuating sensory/cognitive disturbances.
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