I've actually been doing a lot of research into the connection between thryoid disorders and seizures because I occasionally have nocturnal seizures. The answer is yes, they could be connected, but it's also possible that they're independent of each other. Mine seem to be triggered by a sudden excess of thyroid hormone. Your thyroid hormones have a lot of effect on your brain and how it functions.

What I've learned is that everyone seems to have a "seizure threshold" - the point at which their brain will lock up and they'll have a seizure. For some people that threshold is really high, for others it's a lot lower and it takes less for things to jam up.

So there could be a connection, but what you really want to do is take him to a neurologist. Whatever the cause is, you should try to get those seizures under control. A lot of seizure types don't really do any damage, but the more you have the more prone you are to having more and for them to get worse. It can snowball. If you suspect the thyroid is factoring into it they can run labs to see where his levels are at and hopefully tweak things from there.

I'm really sorry though - it can be super scary to watch our little ones deal with something like that. There are some great epilepsy forums also where you can get advice too!

Here are a few articles if it helps:

Congenital hypothyroidism presenting with seizures
http://www.bioline.org.br/request?pn04022

Thyroid disease and seizures:
https://books.google.com/books?id=RONtSNHJSa0C&pg=PA188&lpg=PA188&dq=hyper+hypo+thyroid+seizure&source=bl&ots=gzNHCQhT2D&sig=FrOLDX15SbScGppUzC61L0NbJiM&hl=en&sa=X&ved=0CCIQ6AEwATgKahUKEwjo5M_WgMPIAhVHax4KHUg2Adg#v=onepage&q=hyper%20hypo%20thyroid%20seizure&f=false

This one is about hypER thyroid causing seizures, but it shows that your thyroid can affect that:
http://www.omicsonline.org/thyroid-hormone-induced-seizures-a-case-report-and-review-of-literature-2161-0665.1000129.pdf

Thanks for that info JessM. Seizures and hypothyroidism is something I've been "taking a look at" for quite some time. This information helps. Would you consider contributing to the "thyroid resources group" on this subject?

MButterfly I'd be curious to hear your experiences. This has been going on with me for a few years and I only recently realized what it is. Yes I'd be happy to contribute to the resources group! I'm not exactly sure how to do that though

Sent you a message on how to do that.

There's hypothyroidism galore (hashi's mainly) in my family. Oddly enough, we also have several with seizures. I've often wondered if there wasn't a link...apparently there is. Doctor's are aware of it for the most part, but a really smart neuro guy pointed out that too much or too little thyroid hormone can absolutely disrupt brain signals or send them into over-drive.

In my case, it's the lack of thyroid hormones that seem to set them off.

He has an appointment with Neuro on the 5th December. Is it possible the medication he's on can be causing the Rx He's on levithyroxine. I think that's how it's spelled.

I looked up a list of possible side effects. It does list seizures:

http://www.ncbi.nlm.nih.gov/pubmedhealth/PMHT0010926/?report=details#side_effects

However don't just up and stop the medication. The two might not be related. Talk to his doctor about it - have you told his regular doctor that prescribed it? I'm glad you got an appointment with the neuro