Hi
Welcome to the MedHelp forum!
Apart from anxiety and panic disorder, increased sensitivity to sound is seen in migraine headaches, chronic fatigue syndrome, depression, TMJ disorders, Lyme’s disease, post traumatic stress disorder, and ear damage by toxins and medications.
Since you have nausea, headaches, mild rise of temperatures and vision problems, it is probably migraines.
If the episode was a non epileptic seizure, then it can be due to low sodium or blood sugar. Sleep disorders and benign positional vertigo can also cause dizziness, nausea, vision and hearing problems and seizures.
Hence all these conditions will need to be ruled out one by one.
Since I cannot examine you and know other related conditions you may be having, nor is a detailed history possible on net, I have listed the various possibilities that should be looked into. Take care!
I also agree that you need to go back to your doctor and have additional testing done. Especially with your family history of seizures, that possibility needs to be looked into further. Just because you had an EEG that didn't show any seizure activity, it doesn't mean you don't have them. It only means you didn't have any while thye were doing the test. You may need to have a 24 hour EEG done, where they monitor you for a full 24 hours and see if there is any seizure activity. You also said that your EEG was done two years ago and it was when your symptoms were not as severe as they are now. That, in itself, is reason enough to have it redone.
A couple of questions I do have, though, is when you said last week you wound up on the floor shaking for 30-45 minutes.
a) How do you know you were shaking - do you remember falling and shaking or did someone else find you and tell you you had been shaking?
b) Were you conscious throughout this period of time?
c) Did you have any loss of bladder or bowel control during this episode?
These questions are pretty important and something that your doctor will probably ask also. The answers to them can help them determine if this actually is seizure activity or if it might be related to your low blood pressure or if something completely different is going on. If you actually remember yourself shaking, were conscious during the episode and didn't have any loss of bladder and/or bowel control during it, it probably wasn't a grand mal seizure. I'm not a doctor, but I do have a couple of friends who have seizures (grand mal and one has petite mal), so I'm a little familiar with them.
Are you on any medication, especially for your low blood pressure or any special diet for it (increased sodium intake, etc.)?
In addition to having another EEG done, I also agree with Creampuffy that you should have a MRI or CT scan done.
Best of luck and please keep us posted on how you're doing and what they determine is going on.
I am not a doctor mallory, but I can tell that your symptoms are definitely not normal. Go back to your doctor and have a MRI or a CT scan done. You could be having similar problems to your grandmother's or something else such as an aneurysm developing.