What causes seizures to occur when falling asleep?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Seizures that happen while falling asleep are often linked to shifts in brain activity during the transition from wakefulness to sleep. This period involves changes in electrical signaling that can trigger seizures in people with sleep-related epilepsy syndromes, such as sleep-related hypermotor epilepsy (SHE) or juvenile myoclonic epilepsy. Common symptoms include sudden jerking movements, unusual vocalizations, or brief loss of awareness right as you drift off.

Because sleep-onset seizures can be mistaken for normal sleep twitches or other conditions, identifying the underlying cause matters for getting the right care. A fast, free symptom check can help you clarify what you're experiencing, understand possible causes, and decide whether it's time to see a neurologist—giving you clear, personalized next steps in just a few minutes.

Reviewed for medical accuracy: 07/20/2026

Important Next Steps

Learn why seizures happen when falling asleep Discover if sleep-onset events need urgent care Find out if nighttime episodes could be seizures See OTC options for related symptoms Find a doctor for seizure evaluation Understand home remedies for nighttime seizure concerns Check likely causes of seizures while sleeping

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Explanation

Seizures occurring as one falls asleep are associated with the transition between wakefulness and sleep. During this time, the brain's activity changes, which can sometimes trigger seizures in people with sleep-related epilepsy.

Key Points:

Sleep-Related Epilepsy: Some types of epilepsy are more likely to cause seizures during sleep or when falling asleep. This is because certain brain patterns during sleep can trigger seizures (Reference 1).
Sleep-Wake Cycle: Partial seizures can occur at different times during the sleep-wake cycle. Falling asleep is a common time for these seizures because of the changes in brain activity (Reference 2).
Clinical Aspects: Understanding when seizures occur helps in managing them better. Treatments can be adjusted to help reduce seizures that happen at sleep onset (Reference 3).

If you or someone you know is experiencing seizures, it is important to talk to a healthcare provider for proper diagnosis and treatment. You can start by using Ubie's free AI-powered symptom checker to better understand your symptoms before your appointment.

(References)

Carreño M, & Fernández S. (2016). Sleep-Related Epilepsy. Current treatment options in neurology, 27059342.
Herman ST, Walczak TS, & Bazil CW. (2001). Distribution of partial seizures during the sleep--wake cycle. Neurology, 11402100.
Feijoo M, & Bilbao J. (1992). Seizures of sleep onset: clinical and therapeutical aspects. Clinical neuropharmacology, 1576598.

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