This can be a manifestation of epileptic fit as well.
Given your history of epilepsy, the present may vary over time.
Given the suddenness of incident, that is a strong possibility.
Another possibility can be TIA or ministroke.
This occurs due to the sudden decrease in blood flow to the brain due to the blockages in the carotid or vertebral arteries.
Once the blood flow restores symptoms subside.
This is a warning sign of major stroke in future.
I will suggest you to go to the local hospital for further check up.
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