My mother is 75 Over the last 3 years has had episodes of dizziness, where she feels as if all of her blood is rushing out of her feet. These episodes happen at a regular 4 week interval - nothing in between.Has had CT scan, MRI, EEG, bloodwork,etc - all normal.During this time of her "monthly" dizziness two months ago she had a seizure (first time ever in 75 years), then hour later another one in the hospital. Muscle spasms so bad that humerus bone broken. Had to have op on broken arm.
Two weeks ago had another seizure. All of these appear as epileptic seizures - convulsions, limb jerking,etc.
She also cannot sleep for the past few years - a couple of hours a night only.
Gets terrible cramps in her legs and feet (but magnesium and potassium blood levels are normal as is sugar, sodium and calcium).
Docs have given phenytoin drug.
Please give me an idea of what is causing these seizures all of a sudden and why they only occur at the same time each month....? Thank you