Was just woken up to my dog having a seizure... and I'm trying to find info on this online but can't and thought maybe someone here could help.
He's had seizures since shortly after we adopted him at 3 yrs old. (5 yrs old now). It seems that he typically has seizures a few days after he is under any stress (visitors to the house, any changes in the house, traveling, etc.) or when he does something wrong and knows he's going to get in trouble for it (ie. Has an accident in the house). His seizures are always accompanied by vomiting.
Tonight, for example, I woke up to him wobbling through the room, very unsteady, throwing up... after he vomited, as I was cleaning it, he had a seizure. Held him, calmed him down, cleaned up the vomit... and as I walked to the door to throw out the bag of vomit, I stepped in a pile of poop by the front door. From the look of it, it didn't seem like he lost control of his bowels while having a seizure... it was just a neat pile of poop, not all over the place, and right in front of the door. So, my assumption is (since I can't be sure as I was asleep) that he pooped in the house, was nervous about getting in trouble for it, and then started vomiting and having a seizure.
Is it possible for dogs to have seizures due to nervousness? Could that be a trigger of some sort? Does that mean he is epileptic or could it be some other issue? I mean, most dogs get nervous from time to time, but typically don't have seizures as a result... why is this happening with my dog? And am I crazy for thinking it's stress related? Maybe it's just coincidence and I'm reading into it too much?
And if it is from nervousness, aside from trying to limit his stress, is there anything else I can do? The vet has basically just recommended I keep an eye on him when he has seizures, and if they last longer than 5 min or so, or he has many close together, to take him to the er vet... but is hesitant to put him on meds as he does not have them regularly (every few months or so, typically).
Thanks for any input you may have.

He needs to be evaluated by a specialist. Meds to treat this are the same as humans and can have some not so great effects. For you is he a lab or lab mix. Labs can have something called exercise induced collapse. (EIC) seizure like activity after exercise and can occur after stressful situation.

No, he is actually a pomapoo (pomeranian/poodle mix). It's not a full out seizure where he loses control of his bowels or flails about like crazy. My old dog used to do that, and in comparison I guess you could call his seizures "mild"- he tenses up, looses balance, sways back and forth, falls over, and then lays and basically vibrates pretty intenseley for a few minutes with his eyes bugging out... it's very clearly beyond his control... sometimes he can't see, sometimes he doesn't seem to hear me... sometimes he stops breathing for a little while and then pants like crazy afterwards (I guess to catch his breath)... and usually he vomits either immediately before, immediately after, or both. And it's not normal dog vomitting- his whole body heaves and you can hear a swooshing sound from inside of him...

It really bugged me out at first, but I've gotten more and more used to seeing it. It still saddens me so much that he has to deal with this though. But I find that the calmer I stay when he's having a seizure, and talk to him and pet him and tell him what a good boy he is, the quicker he seems to come out of it.

It actually happened again this morning... same as before... found poop in the living room (not sure how he had to poop again, since he had gone only hours before!)-I woke up to him stumbling around, he vomited 2 or 3 times, had a seizure- and now is completely fine, just a little tired.

It seems so connected to nervousness to me, but is that even possible?

I have a poodle that had a seizure, granted it was only one but her mother did it as well several times.

It could be an inherited problem from one of the parents.

If she does it often then you could ask your vet about medication but our resident Pets expert Altenweg had a dog that had seizures a lot and she started feeding Green Beans... no more seizures!

Really? Maybe I'll try the green beans-
Could seizures be stress induced? Or is it just coincidence?

You can't say without a vet check but it is possible that stress or excitement can bring them on.
With my girl it was completely out of the blue though, we were just sitting on the couch and she started shaking and convulsing.
She couldn't walk for maybe 15 minutes and she was scared but then it was all over and she hasn't had one since.

If you get a chance talk to Alty, she can tell you exactly what she did ;)

Stress can definitely trigger seizures. Excitement can as well. They can really be caused by anything.
Causes could be anything from epilepsy to a tumour in the brain.