Blurred Vision, Rapid Heartbeat, High BP, Syncopal Episodes, Seizures
The symptoms you describe fits into category called Syncopal episodes. It could be seizures. But you said epilepsy ruled out (To rule out seizures you need EEG and CT brain) by an expert Neurologist. Good to know that.
Syncopal attacks needs a major cardiac evaluation. All the symptoms and description of babinski's sign ( feet do not respond to spike ) are going towards inadequate blood supply to the brain. Thus brain is automatically throwing you down. It tries to get its blood supply when you fall down. The blood flow increases to the brain.
Now the question is why is there a low blood supply to the brain ( against the gravity), is it the pump failure ( pump is heart here).
Regarding the work up for Syncopy, you need EKG/ECG, 24 Holter Monitoring, and Echocardiogram. You can get these done with the help of due to vasovagal phenomenon. Vasovagal syncopy also cause increased heart rate, high BP, dizziness temporarily. It happens when you are urinating, having bowel movements, when you are hungry, and when you are afraid of some thing.
Make sure your blood work , CBC, BUN, Creatinine, electrolytes, lipid profile , and blood pressure at rest are normal. Discuss the results with General Practitioner.
I will be available to answer your follow up queries.
Could a cold/flu/virus be a trigger? Apart from when I was pregnant and had seizures, the other episodes are usually if I am not well in some way. The latest one I had seen the doctor the day before with my neck and right arm glands slightly up, temperature, slight chest inflammation. I also tend to get cluster headaches which have been more frequent over the last year, could this also be some sort of trigger?]