@JWK5 was doin' a bit of lurking myself when your posts caught my eye... I've been working ground-level mental health for over a decade now and meds, anxiety, panic attacks, etc are right up my ally. I'm no doctor but I've been observing these things a LOT more intimately than most for quite awhile.
All of this is just questions, good news and hopefully useful info about your panic attacks and medications. The seizure thing is out of my expertise and shouldn't be ruled-out or ignored.
1: I'm going out on a limb a betting you have an SSRI/MAOI or something similar as a "main med", if so I want to make sure you're aware of
ssri syndrome. When you say you're on painkillers(even non-opiate) and I'm
betting an SSRI/MAOI and you talk about getting in this jumble'd state I'd really like to rule this out because it does happen and it's potentially dangerous.
Dr's are human to and can make mistakes, I once had a client come back from the Dr prescribed a new medication and a ton of ibuprofen...the result was super slur'd speech, insta-fever, extremities going numb and one hell of a panic attack.
Look for interactions between your prescribed meds, be mindful of what over-the-counter meds you take with your prescribed ones (no joke, some will fuck you up) and have someone take your temperature next time you go into your "slurred-speech" mode. A sudden fever is a telling sign.
2: Good news for you! A lot of NPs and Drs I work with have observed that panic disorders tend to resolve themselves naturally given time. Mostly these types of things manifest around a person's 20s and unless something separate is exasperating it then usually things resolve themselves mostly around mid-30s to early-40s. Not much is known of why but it's just been observed that these things seem to "go away" in most cases.
In other words if you're getting that "I'm screwed for life" or any other kind of fatalistic outlook then do yourself a favor and put that shit on the shelf. You have
very good odds of living a normal life.
3: Bad news for you! Panic attacks, stress and anxiety take one hell of a toll...you can let medicine and time do it's thing but
I really REALLY recommend "fighting back".If every day you spent your life dodging hundreds of flying rocks and then one day there were like two or three even though your situation just to a degree improved you'd still have that feeling of "What the fuck is going on? Where'd are all the rocks?" You'd still be anticipating all the feelings and tension and panic even if it is not actually there.
That right there is what you gotta fight. People tend to condition themselves when dealing with panic attacks, panic attacks suck...a lot. Sometimes people get so overwhelmed, stressed and anxious that panic attacks just happen. Sometimes panic attacks come from a "trigger" like a phobia or if a person has been in a bad situation for long enough like PTSD, they may panic if they here a soda can open as they knew that sound lead to drunken abuse...or something similar...basically Pavlov's dogs but in humans.
What they both now have in common is that the panic attack itself is now something to be feared and likely avoided, more so for the one who just had one out of nowhere because they weren't used to similar psychological pressures before.
So it's almost assured that both can now add panic attacks to the list (if it existed before) of things that cause panic attacks.
Exposure therapy works. Even if you don't have avoidance behaviors. Panic attacks are self-escalating to, as they set in the person gets worse as the panic attack causes more...panic.
If you have a trigger seek it out and force your self to have a panic attack (told you it's gonna suck), if not just wait for one to occur and give the following a try.
Let it happen: It's gonna happen, it's gonna suck but don't avoid it...that avoidance mindset is the best way to assure that they will continue or get worse. If you have any "as needed" anxiety meds such as any of the many benzodiazepines (lorazepam, diazepam, etc) go ahead and use them as you need but begin to cut down as you keep doing this.
Soon you will notice that the attacks get less severe, some have testified that they would feel them coming on then as they welcomed it it left before it would even begin. This has potential to lead to full recovery given time if you keep at it.
This has been the most successful method of helping people get a leg up on this that I've used and it has
never failed to show substantial results. The beginnings suck but the results are undeniable.
Okay that's about enough outa me lol. Best of luck with everything and I'm betting you're gonna see better days.