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Published on: 7/21/2026

What conditions can cause seizure-like symptoms without being a seizure?

Yoshinori Abe

Reviewed by Yoshinori Abe, MD

Internal Medicine

Several medical conditions can mimic seizures without actually being true seizures. Common seizure mimics include:

  • Fainting (syncope): A sudden drop in blood pressure can cause loss of consciousness and brief muscle jerks.
  • Migraines: Certain migraines can trigger auras, visual disturbances, or temporary neurological symptoms.
  • Sleep disorders: Conditions like narcolepsy, night terrors, or REM sleep behavior disorder can resemble seizure activity.
  • Psychogenic non-epileptic seizures (PNES): Episodes that look like seizures but stem from psychological causes rather than abnormal brain electrical activity.

Correctly identifying whether an event is a true seizure or a mimic is critical, because treatment approaches differ significantly. Misdiagnosis can lead to unnecessary medications or missed underlying conditions.

If you or a loved one has experienced episodes that resemble seizures, don't guess—get clarity. Take a free, instant, online symptom check to better understand what may be happening and confidently navigate your next steps toward the right care.

Reviewed for medical accuracy: 07/20/2026

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Important Next Steps

Learn if seizure-like symptoms need care todayDiscover likely causes of seizure-like episodesSee if it could be a seizureFind OTC options for seizure-like symptom reliefFind a neurologist for seizure-like symptomsDiscover home remedies for seizure-like symptomsUnderstand what causes these episodes now

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Explanation

Seizure-like symptoms can occur due to various causes that affect the brain or body but don't involve abnormal electrical activity:

Fainting (syncope): A brief loss of consciousness caused by reduced blood flow to the brain, sometimes with jerking movements. Migraine headaches: Severe headaches can cause visual changes, confusion, or temporary weakness resembling seizures. Sleep disorders: Conditions like narcolepsy or sleepwalking can mimic seizure activity. Psychogenic non-epileptic seizures (PNES): Episodes triggered by psychological factors, not brain electrical disturbances. Transient ischemic attacks (TIAs): Brief "mini-strokes" causing sudden neurological symptoms. Movement disorders: Such as tics or tremors that may look like seizures. Hypoglycemia: Low blood sugar can cause shaking, confusion, or loss of consciousness.

If you're experiencing any of these symptoms, take Ubie's free AI symptom checker to help identify potential causes and understand when to seek medical care. Proper medical evaluation, often including EEG and imaging tests, is essential to diagnose and treat the correct condition.

(References)

  • Auxéméry Y, Hubsch C, & Fidelle G. (2011). [Psychogenic non epileptic seizures: a review]. L'Encephale, 21482234.

  • Devinsky O, Gazzola D, & LaFrance WC Jr. (2011). Differentiating between nonepileptic and epileptic seizures. Nature reviews. Neurology, 21386814.

  • Marcolini E, & Tolchin B. (2021). Functional Seizures. Emergency medicine clinics of North America, 33218653.

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