A non-epileptic seizure looks like epilepsy but produces no abnormal electrical activity in the brain. That single difference changes everything: the diagnosis, the treatment and the outcome. These seizures do not respond to antiepileptic drugs, and prescribing them causes harm without benefit. Around 25 percent of patients referred with drug-resistant seizures turn out to have non-epileptic episodes, not epilepsy.
According to Dr. Gurneet Singh Sawhney, a leading neurosurgeon in Mumbai, confusing a non-epileptic seizure with epilepsy means years of antiepileptic drugs that don’t work and, in some cases, a referral for surgery on a brain that doesn’t need it. The correct diagnosis changes everything downstream.
Seizures that haven’t responded to antiepileptic medication or a diagnosis that doesn’t feel right?
What Makes a Non-Epileptic Seizure Different From an Epileptic One?
The event looks similar. The mechanism is entirely different. That distinction is what makes video-EEG monitoring so important.
EEG: an epileptic seizure produces a clear abnormal electrical discharge on EEG during the event. A non-epileptic seizure leaves the EEG completely normal. That is the definitive diagnostic difference.
Duration: non-epileptic seizures often last longer than typical epileptic events, sometimes many minutes, with a more gradual onset and offset rather than the sudden start typical of most seizures
Clinical features: Closed eyes during the episode, crying, pelvic thrusting and the ability to resist eye opening are all features more consistent with psychogenic non-epileptic seizures (PNES) than with true epilepsy.
Drug response: antiepileptic drugs don’t touch non-epileptic seizures. If seizures continue despite adequate anticonvulsant therapy, that failure is itself a diagnostic clue that should be followed up.
Video-EEG is the gold standard. Capturing an event on video while the EEG runs simultaneously is what confirms the diagnosis. That investigation is also the gateway to any epilepsy surgery assessment, ensuring only the right patients proceed to surgical workup.
How Are Non-Epileptic Seizures Treated?
Not with antiepileptic drugs. That is where the treatment plan starts: removing what doesn’t work and replacing it with what does.
Psychogenic PNES: cognitive behavioural therapy is first-line, addressing the psychological mechanisms, trauma or functional neurological disorder underlying the episodes. Medication has no role here.
AED withdrawal: patients misdiagnosed with epilepsy are frequently on multiple antiepileptic drugs that provide no benefit. Supervised withdrawal of those medications is part of the treatment, not an afterthought.
Organic causes: non-epileptic events with a physical cause, cardiac arrhythmia, hypoglycaemia, syncope, need the underlying condition treated directly. Neurology is not the right management pathway for those cases.
Prognosis: seizure freedom is achievable in around 30 to 40 percent of PNES patients with appropriate psychological treatment. Long diagnostic delays are consistently associated with worse outcomes.
The cost of misdiagnosis accumulates over years. Getting the right diagnosis at the right time is what this investigation is for. This guide on drug-resistant epilepsy surgery explains what the workup involves when seizures genuinely don’t respond to medication.
Why Choose Dr. Gurneet Singh Sawhney?
Dr. Gurneet Singh Sawhney trained in functional neurosurgery in Japan and has over 18 years of experience in epilepsy surgery assessment, in which distinguishing epileptic from non-epileptic events is a critical first step before any surgical consideration.
Patients referred for refractory seizures sometimes leave the first consultation having avoided surgery entirely, because the workup reveals PNES rather than structural epilepsy. Correct diagnosis leading to the right treatment is exactly what the assessment is designed to produce.
Frequently Asked Questions
Is a non-epileptic seizure dangerous?
PNES itself is not life-threatening but misdiagnosis and wrong treatment can cause significant harm.
How is a non-epileptic seizure diagnosed?
Video-EEG monitoring is the gold standard, capturing an episode while recording brain electrical activity.
Can non-epileptic seizures be cured?
In some patients yes, particularly with CBT and appropriate withdrawal of unnecessary antiepileptic drugs.
Do antiepileptic drugs help non-epileptic seizures?
No, antiepileptic drugs have no effect on non-epileptic seizures and cause unnecessary harm.
Disclaimer: The information shared in this content is for educational purposes only and not for promotional use.