Dear Amanda
First of all I need you to relax and understand that according to a research every 100th person on this planet is prone to having at last 1
seizure in his or her life span. It is a big number. secondly if your
MRI and EEGs are normal then the cause of your seizures is at
neuron level. Sometimes some part of our brain produce enhanced neurological activity that can lead to a seizure. Now that as your seizure is Grand Mal type, it is most likely that it originates in the
cerebral cortex of your brain. If i was your doctor I would recommend you take some anti epileptic medication.
I would also recommend you to get enough sleep. There is a more chance of having an epileptic fit if your brain is fatigued so yes it is related to less sleep.
As for the injury to your neck; There are a lot of seizures that can develop post traumatic to
head injury but mostly these seizures are focal because a certain part of brain is damaged.
The pain you have prior to an epileptic fit could be an aura. Auras are very common in grand mal
epilepsy. But you should get it checked from a good neurologist/ neurosurgeon.
I hope this answer was helpful. Feel free to ask anything
regards,
Dr. Ammar bin Ahsan