@januaryjane
It definitely sounds as though you experienced a Generalized seizure. Did you only have the one seizure? To be diagnosed with Epilepsy you have to have 2 or more unprovoked seizures.
Did you experience hallucinations prior to having the seizure? I ask because seizures can cause hallucinations afterwards, even a week later. Some people have hallucination auras prior to the seizure, did that happen to you?
I’m curious if perhaps your sleep issues may have caused or contributed to the seizure. I would not think your sleep quality is top notch due to the talking, thrashing, nightmares and hallucinations. They may have caused an abnormal disruption in the neuronal communication done by electrical and chemical methods and caused the seizure. Poor sleep quality is a major trigger of seizures in people with Epilepsy.
You mentioned “Sounds like it could be connected to a movement disorder, such as Parkinson's.” Do your doctors suspect Parkinson’s? It is rare for someone to have both Parkinson’s and Epilepsy.
Do you know what time of day your seizure struck? Nocturnal seizures are quite common. They usually happen during the transition between wakefulness and REM sleep or stages 1 and 2 of sleep which are times of lighter sleep within a couple hours of nodding off. Seizures also frequently happen just prior to a person wakening. Current belief is seizures don’t develop during REM sleep although I’m skeptical
Anything that disrupts these communication pathways can lead to a seizure. The most common cause of seizures is epilepsy.
I hope you’ve experienced your last seizure..
Take care,
Jake