Can seizures just happen randomly?
Isabella Bartlett
Updated on April 24, 2026
Seizure triggers
For many people with epilepsy, seizures seem to happen randomly. But sometimes they can have a trigger, such as: stress. a lack of sleep.Why did I just randomly have a seizure?
Anything that interrupts the normal connections between nerve cells in the brain can cause a seizure. This includes a high fever, high or low blood sugar, alcohol or drug withdrawal, or a brain concussion. But when a person has 2 or more seizures with no known cause, this is diagnosed as epilepsy.Can you randomly start having seizures?
It's possible for an adult without a history of epilepsy to experience a seizure. Potential causes include central nervous system infections, brain tumors, stroke, and brain injuries. The use or stopping of certain substances, including alcohol, may also trigger a seizure. The type of seizure depends on the cause.How do I know if I had a seizure?
A staring spell. Uncontrollable jerking movements of the arms and legs. Loss of consciousness or awareness. Cognitive or emotional symptoms, such as fear, anxiety or deja vu.What are warning signs of a seizure?
Aura (Late Warning Signs)A Déjà vu feeling (you feel like you are experiencing something that has occurred before) Intense fear and panic. 'Pins and needles' sensation in certain parts of your body. Jerky movements in of the arm, leg, or body.