Jolted awake after deep sleep (Not Hypnic Jerk)

[Paranoid]

No, this is not hypnic jerk (the one anyone might get while falling asleep, often accompanied by dreams of falling / tripping sensations).

My Symptoms:
About 15 minutes into deep(unconscious?) dreamless sleep, there is a sudden SINGLE violent jolt to the body which wakes me up., I wake up confused for <3 seconds and then realise what has just happened. Feels like coming to consciousness from the deep darkness unlike waking from regular sleep.
No muscle pain/ tongue biting etc. People around can notice it as something unusual. I feel fresh again, compared to groggy feeling before nap. I always hope for this symptom on triggered days, as it is predictable, safe and I will be seizure free for the rest of the day after this symptom.

Known Trigger:
I have had this many times in my life and I can predict it well.
On days when I wake up during my seizure trigger hours (say 5am) and when I take a nap later after being awake 3 - 6 hours without a TC and feeling tired.

Question :
Is this nocturnal seizure or an alternative version of common TC ?

 

[Nakamova]

I don't think it's a tonic-clonic seizure, since that by definition involves both a tonic phase (tensed muscles) and a clonic phase (spasming muscles). What you describe sounds more like a nocturnal myoclonic seizure.

Have you ever had a sleep-study done? That might show at which stage of sleep the jerk occurs, and what your brain is doing at that time. It might also show if there are any co-occurring issues such as apnea or restless leg syndrome.