Someone can deliberately imitate a seizure, and emergency physicians encounter this regularly, but the picture is far more complicated than a simple yes-or-no. The overwhelming majority of seizure-like events that turn out not to be epilepsy are not deliberate fakes at all. They are psychogenic nonepileptic seizures, episodes that look and feel like epileptic seizures to the person experiencing them yet arise from psychological processes rather than abnormal electrical activity in the brain. Telling these apart from epileptic seizures, and from rare cases of outright faking, requires specific tools and trained eyes. The differences are surprisingly consistent once you know where to look.
Not All “Fake” Seizures Are Actually Faked
The word “fake” implies deliberate deception, and that framing causes real harm because it lumps together very different situations. Clinicians separate nonepileptic events into three categories that share almost nothing except appearance. Psychogenic nonepileptic seizures (PNES) are involuntary. The person is not choosing to have them, even though no epileptic discharge is happening in the brain. Factitious disorder involves consciously producing symptoms, but the motivation is internal: the person wants to occupy the role of a patient. Malingering is outright deception for an external reward like insurance money, disability benefits, or avoiding legal consequences. In both factitious disorder and malingering, patients consciously and deliberately create false symptoms, often visiting multiple healthcare facilities to avoid detection.1PubMed Central. A Diagnostic Dilemma: Is It Factitious Disorder With Nonepileptic Seizure or Malingering With Nonepileptic Seizure? Factitious disorder is distinguished from malingering by the absence of any obvious external gain.2PubMed Central. Factitious psychogenic nonepileptic paroxysmal episodes
PNES, by contrast, are not under conscious control. They represent changes in behavior that resemble epileptic seizures but lack the expected electrical brain changes, and they frequently co-occur with actual epilepsy, which makes diagnosis even harder.3PubMed Central. Using Semiology to Classify Epileptic Seizures vs Psychogenic Nonepileptic Seizures When someone asks “can you fake a seizure,” they are usually thinking about either deliberate imitation or about PNES, and those are fundamentally different problems. The rest of this article focuses mainly on how all of these events differ from genuine epileptic seizures, because that is what matters most for the people experiencing them and the clinicians trying to help.
The Eye Closure Rule
If there is one single physical sign that separates nonepileptic events from epileptic seizures more reliably than anything else, it is what the eyes do. During a genuine epileptic seizure, the eyes almost always open. During PNES, they almost always close. In one study, 50 of 52 patients with PNES consistently closed their eyes during events, while 152 of 156 patients with epileptic seizures opened theirs.4PubMed. Ictal eye closure is a reliable indicator for psychogenic nonepileptic seizures A meta-analysis found that eye closure during the event was the single strongest indicator of PNES, far outperforming any other visible sign.3PubMed Central. Using Semiology to Classify Epileptic Seizures vs Psychogenic Nonepileptic Seizures
This finding is surprisingly robust and difficult to consciously override. During a real generalized tonic-clonic seizure, the brain’s electrical storm forces the eyes open and may cause them to deviate to one side. A person deliberately mimicking a seizure, or having a PNES episode, tends to squeeze the eyes shut because that is the intuitive thing a conscious or semi-conscious brain does during distress. Experienced neurologists sometimes gently try to open the eyelids during an episode; in PNES, the patient often resists, whereas in an epileptic seizure the eyes can be opened without resistance.
A prospective study identified a short list of signs that reliably separated the two. For PNES, the strongest indicators were preserved awareness, eye flutter, and the ability of bystanders to intensify or calm the event. For epileptic seizures, the strongest indicators were abrupt onset, eye opening or widening, and postictal confusion or sleep.5PubMed. Can semiology predict psychogenic nonepileptic seizures? A prospective study No single sign is perfectly sensitive or specific, but eye behavior comes closer than anything else.
Tongue Biting and Other Physical Clues
People sometimes assume that biting the tongue during a seizure proves it was real. The truth is more specific than that. Biting the side of the tongue is a strong indicator of an epileptic seizure; biting the tip is not. A pooled analysis found that lateral tongue biting had perfect specificity for epileptic seizures, meaning it essentially never happened during nonepileptic events.6PubMed. Tongue biting in epileptic seizures and psychogenic events: an evidence-based perspective But tongue biting in general, without specifying the location, had no diagnostic value at all. In a large monitoring unit study, lacerations occurred in 88 epileptic seizures and only one nonepileptic event, and lateralized tongue lacerations correlated with body position rather than handedness or seizure type.7PubMed. Ictal biting injuries in the epilepsy monitoring unit, a cohort study of incidence and semiological significance
Movement patterns also differ. Asynchronous limb movements, where the arms and legs thrash out of sync with each other, strongly suggest PNES.3PubMed Central. Using Semiology to Classify Epileptic Seizures vs Psychogenic Nonepileptic Seizures In a genuine tonic-clonic seizure, the jerking tends to be rhythmic and symmetrical, and both sides of the body stiffen simultaneously during the tonic phase. PNES events more often feature side-to-side head movements, pelvic thrusting, and fluctuating intensity where the movements wax and wane. The duration matters too: epileptic tonic-clonic seizures rarely last more than two minutes. Prolonged convulsive activity lasting five, ten, or twenty minutes with preserved consciousness is a red flag for PNES.
How Doctors Make the Call
The gold standard for distinguishing epileptic seizures from PNES is video-EEG monitoring, where a patient stays in a specialized unit with continuous brain-wave recording and video surveillance until they have an event. The EEG during an epileptic seizure shows characteristic electrical discharges. During PNES, the EEG shows normal background activity even while the patient is visibly convulsing.8PubMed Central. Long-term video EEG monitoring for diagnosis of psychogenic nonepileptic seizures This mismatch between dramatic physical symptoms and a quiet brain on EEG is the definitive diagnostic finding.
The challenge is that PNES are often misdiagnosed as epilepsy before anyone does this test, and clinical presentation alone is not always enough. PNES comprise a wide range of symptoms and signs that are individually neither totally specific nor sensitive, which is why they are so frequently misdiagnosed.9Journal of Neurology, Neurosurgery & Psychiatry. Clinical classification of psychogenic non-epileptic seizures based on video-EEG analysis and automatic clustering On average, patients with PNES wait years before receiving the correct diagnosis. During that time, they are often prescribed anti-seizure medications that have no effect on their events and carry real side effects.
Blood tests can also help. After a genuine convulsive seizure, blood levels of the hormone prolactin rise sharply. One study found that using a prolactin cutoff was highly sensitive and specific for telling nonepileptic events from epileptic ones, with sensitivity reaching 100% for distinguishing PNES from other nonepileptic attacks.10Seizure. Clinical utility of serum prolactin and lactate concentrations to differentiate epileptic seizures from non-epileptic attacks in the emergency room Prolactin levels need to be drawn within a narrow window after the event to be useful, so this works best in emergency settings where blood can be drawn quickly.
What the Nervous System Reveals
Even when the visible symptoms look similar, the body’s autonomic nervous system behaves differently during epileptic seizures versus PNES. Heart rate variability, which reflects the balance between the “fight or flight” and “rest and digest” branches of the nervous system, shows distinct patterns. During epileptic seizures, the sympathetic nervous system surges more intensely, producing higher peaks in certain heart rate markers.11PubMed. Comparing maximum autonomic activity of psychogenic non-epileptic seizures and epileptic seizures using heart rate variability
The difference becomes especially clear in the aftermath. After a convulsive epileptic seizure, the autonomic nervous system shows signs of depression: overall heart rate variability drops, parasympathetic activity plummets, and the balance tips heavily toward sympathetic dominance. After a convulsive PNES, this autonomic suppression does not happen to nearly the same degree.12Seizure. Heart rate and autonomic biomarkers distinguish convulsive epileptic vs. functional or dissociative seizures This makes physiological sense: an epileptic seizure is an electrical storm that exhausts the brain and body, while a PNES, however distressing, does not produce the same kind of global neurological disruption.
These autonomic differences are fueling interest in wearable technology. Devices that continuously monitor heart rate and movement patterns could theoretically flag events and classify them in real time. Early research suggests that wearable sensors combined with machine learning algorithms can distinguish epileptic seizures from nonepileptic events with better-than-chance accuracy.13PubMed Central. Seizure detection using wearable sensors and machine learning: Setting a benchmark Some studies have shown that wearable devices can reduce false alarm rates while maintaining sensitivity for true seizures.14PubMed Central. The research progress of wearable digital health technologies in epilepsy management This technology is still early-stage, but the promise is significant: if a smartwatch-like device could reliably separate epileptic from nonepileptic events outside of a hospital, it could dramatically speed up diagnosis.
When Fainting Looks Like a Seizure
Not every seizure-like event that is not epilepsy involves psychological processes. Convulsive syncope, where a person faints and then has brief jerking movements, is a common cause of misdiagnosis.15PubMed. How to Differentiate Syncope from Seizure When blood pressure drops suddenly and the brain is briefly deprived of oxygen, the body can jerk, stiffen, and even produce what looks like a tonic-clonic seizure. Bystanders understandably call these seizures, and the distinction matters because the treatment for cardiac-related syncope is completely different from anti-seizure medication.
Research comparing video-recorded syncope with genuine convulsive seizures found that jerking movements occurred in about half of syncope cases, but the number and rhythm of jerks were very different. Syncope produced a median of 2 jerks, while convulsive seizures produced a median of 48. The jerks in seizures were rhythmic; those in syncope were erratic and brief. Loss of muscle tone was seen in every syncope case and in none of the seizure cases, leading researchers to propose a practical rule: fewer than 10 jerks suggests syncope, more than 20 suggests a seizure.16PubMed. Differentiating motor phenomena in tilt-induced syncope and convulsive seizures Tilt table testing, where a patient is strapped to a table that tilts upright to provoke a faint, can sometimes clinch the diagnosis.17PubMed. Differentiation of convulsive syncope and epilepsy with head-up tilt testing
Why Nonepileptic Seizures Happen in the First Place
If PNES are not deliberate and not electrical, what causes them? The evidence points strongly toward psychological trauma, particularly from childhood. A systematic review found that people with PNES were consistently more likely to report a history of abuse compared to people with epilepsy, with odds ratios clustering between roughly 2 and 5, meaning the association is moderate to strong.18PubMed. History of abuse and psychogenic nonepileptic seizures: A systematic review A large study using both retrospective and prospective cohorts found that patients with PNES reported greater emotional abuse, emotional neglect, physical neglect, and sexual abuse than patients with epilepsy, and these differences held up even after accounting for age, sex, and other clinical factors.19PubMed Central. Childhood trauma in patients with epileptic vs nonepileptic seizures PTSD and a greater total lifetime burden of trauma have also been linked to nonepileptic seizures.20PubMed. A comparative study of trauma and posttraumatic stress disorder prevalence in epilepsy patients and psychogenic nonepileptic seizure patients
Brain imaging research is beginning to show how this might work at a neurological level. People with PNES show altered connectivity between brain regions involved in emotion processing, movement control, and executive function. Regions like the insula, which processes emotions, show reduced connectivity, while areas involved in inhibiting unwanted movements show increased connectivity.21PubMed. Brain functional connectivity in individuals with psychogenic nonepileptic seizures (PNES): An application of graph theory Multiple studies have found that the strength of these abnormal connections correlates with dissociation scores, meaning the more a person tends to “disconnect” from their emotions or body, the more pronounced the brain connectivity changes are.22Journal of Neurology, Neurosurgery & Psychiatry. Functional connectivity of dissociation in patients with psychogenic non-epileptic seizures23PubMed. Resting-state networks and dissociation in psychogenic non-epileptic seizures
The current understanding is that PNES represent a breakdown in the normal integration of emotion and motor control. Under stress, emotion circuits hijack movement circuits in a way that produces seizure-like episodes without any epileptic discharge. This is not “faking.” The brain is genuinely malfunctioning, just not in the way epilepsy does.
The Real Danger of Getting It Wrong
Misdiagnosing PNES as epilepsy is not just an academic error. It exposes patients to serious medical harm. When prolonged PNES are mistaken for status epilepticus, a life-threatening form of continuous seizuring, patients receive aggressive emergency treatment: high-dose benzodiazepines, second-line anti-seizure drugs, and sometimes intubation. A study of clinical trial data found that about a quarter of patients with prolonged PNES who received benzodiazepines experienced adverse effects including respiratory depression and intubation, and roughly one in five were admitted to an intensive care unit.24Journal of Neurology, Neurosurgery & Psychiatry. Misdiagnosis of prolonged psychogenic non-epileptic seizures as status epilepticus: epidemiology and associated risks Patients treated with benzodiazepines before reaching the hospital had worse outcomes than those treated after admission, suggesting that each additional dose compounds the risk.
Beyond acute emergencies, people misdiagnosed with epilepsy spend years taking medications that do nothing for their actual condition. Anti-seizure drugs carry side effects including fatigue, cognitive slowing, weight changes, and mood disturbance. Correct diagnosis through video-EEG monitoring avoids these harms and redirects care toward treatments that actually work.8PubMed Central. Long-term video EEG monitoring for diagnosis of psychogenic nonepileptic seizures
Treatment That Works for Nonepileptic Seizures
Once PNES are correctly diagnosed, cognitive behavioral therapy is the most studied and effective treatment. In a pilot randomized controlled trial, CBT was significantly better than standard medical care at reducing seizure frequency, with large to medium effect sizes. Patients in the CBT group were about three times as likely to achieve three months of seizure freedom compared to those receiving standard care alone.25PubMed Central. Cognitive-behavioral therapy for psychogenic nonepileptic seizures: A pilot RCT In another study, about two-thirds of patients who completed a CBT program reported no seizures by their final session, with improvements in depression, anxiety, and quality of life.26PubMed. Cognitive behavioral therapy for psychogenic nonepileptic seizures
An important early step is withdrawing anti-seizure medications that were prescribed based on the incorrect epilepsy diagnosis. This is done under medical supervision, and the combination of medication withdrawal plus CBT can lead to meaningful seizure reduction.27PubMed Central. Cognitive Behavioral Therapy (CBT) in Psychogenic Non-Epileptic Seizures (PNES): A Case Report and Literature Review The therapy itself typically focuses on identifying emotional triggers, developing coping strategies, and addressing the trauma or stressors that underlie the events.
Children Present Differently Than Adults
PNES look different depending on the patient’s age, and this contributes to underdiagnosis in younger patients. Adults with PNES tend to present with dramatic convulsive activity: prolonged shaking, eye closure, vocalization during the event, and sometimes pelvic thrusting. Children, by contrast, are more likely to show subtle, minor motor activity rather than full convulsions. In one study, minor motor events were the predominant feature in over half of pediatric cases, compared to about a third in adults.28PubMed. Semiology of psychogenic nonepileptic seizures: age-related differences Signs like lateral tongue biting and opisthotonos (arching of the back) were rare overall and only appeared in adults.
Because children’s nonepileptic events often lack the dramatic movements that prompt clinicians to suspect PNES, the condition may go unrecognized for longer in pediatric patients. Awareness of these age-related differences could help clinicians catch the diagnosis earlier, sparing children unnecessary medication and the distress of a misapplied epilepsy label.
Stigma and the “Just Faking It” Problem
The biggest obstacle many patients with PNES face is not the seizures themselves but how they are treated once diagnosed. A systematic review of healthcare practitioners’ attitudes found that clinicians frequently viewed PNES as less severe or disabling than epilepsy and associated it with a greater degree of voluntary control. Practitioners described patients with PNES as challenging and frustrating, and there was widespread uncertainty about whose responsibility it was to treat them.29PubMed. Health care practitioners’ perceptions of psychogenic nonepileptic seizures: A systematic review of qualitative and quantitative studies
Patients feel this. Qualitative research has documented people with nonepileptic seizures describing being negatively stereotyped, treated as morally culpable for their condition, and subjected to conduct that one study characterized as “blaming, shaming, humiliation.” These encounters have wide-ranging consequences: patients report emotional harm, avoidance of future healthcare, and worsening of their condition.30PubMed Central. “Blaming, shaming, humiliation”: Stigmatising medical interactions among people with non-epileptic seizures
This stigma is partly rooted in the word “psychogenic” itself and the historical framing of these events as “pseudoseizures,” a term that has largely been abandoned by the field precisely because it implies fakery. The newer terminology, functional neurological disorder or functional seizures, attempts to communicate that these are real neurological events caused by a functional problem with how the brain processes emotion and stress, rather than by structural damage or deliberate deception. The language shift is slow, and old attitudes persist. But the neuroscience increasingly supports what patients have been saying all along: they are not doing this on purpose, and the condition is genuinely disabling.
Forensic and Legal Complications
The rare cases of genuine malingering, where someone deliberately mimics seizures for external gain, do exist and pose real diagnostic challenges. Performance validity tests and symptom validity tests, tools originally developed to detect exaggeration on neuropsychological testing, have been explored for use in identifying both malingering and factitious disorder.31PubMed Central. The other face of illness-deception: Diagnostic criteria for factitious disorder with proposed standards for clinical practice and research In legal settings, the question of whether someone’s seizures are epileptic, psychogenic, or deliberately produced can determine outcomes in disability claims, criminal proceedings, and custody disputes.
Even with specialized testing, confidently diagnosing malingering is extremely difficult. The threshold for that label is high because getting it wrong, telling a genuinely ill person that they are faking, causes profound harm. Video-EEG remains the most reliable tool: it can confirm that no epileptic discharge is occurring during an event, but distinguishing involuntary PNES from deliberate imitation requires careful clinical judgment, collateral history, and sometimes prolonged observation. Most neurologists are appropriately cautious about labeling anyone a malingerer, and the base rate of true malingering among seizure patients is thought to be quite low compared to PNES.