Hey :). DP has epilepsy so I'm very familiar with seizures, though obviously this won't be much use until you know it's what you have.
The good news is that once you are diagnosed, you won't need medical intervention every time. DP always has his shortly after waking, so luckily he's in bed (he does fall out occasionally while fitting) and he'll have 4 stages..
The actual fit (jerking etc, starts with him crying out as air is pushed up past his vocal cords - it always sounds scary like he's in pain but it's just the air, he knows nothing about it)
A period of difficult breathing as a lot of spit/blood (from bitten tongue) has built up in his mouth. So breathing will sound like he's breathing underwater and gradually gets back to normal as his body lets him swallow again. Eventually it just sounds like little snores and he just seems asleep.
The next stage is waking up and confusion. Often he can't speak properly. He always wakes up wanting to go for a wee (even though more often than not he did that during the fit) so I help him up. I have to help him to the bathroom as will try to go somewhere random to wee if I don't direct him 😅. It's just the confusion - your stripping off is probably your version of this!
Fourth stage after he's been to the bathroom is going to bed and sleeping for a long time! He will sleep for hours, then will wake up and ache all over and have a very sore tongue from where he bit it. He'll come downstairs and have something to eat, be really sleepy and we'll go for an early night. It wipes out the day if he fits in the morning, but by the next day he's back to normal luckily.
Sorry for the long post but it's useful to know other experiences - plus fits can get predictable in their progression, so whoever is with you will learn when you need to call an ambulance and when all you need is supervision until your fit is over.
Importantly - it's worth pointing out that DP, along with the vast majority of others with epilepsy, has his fits completely under control with meds. That's to say if he takes them and they remain in his system, he won't have a fit. The only time he ever has them now is if he's ill with an upset stomach so his tablets aren't in his system long enough.
It can take a little while to find a med/dosage that works for you, but once you do, you should be able live completely as normal, without fear :).