Originally posted by Ira Your cousin appears to be having atonic seizures based on your post. I don't think it's Meniere's Disease. I'm not wholly convinced it's migraine either.
You often do not find anything wrong in Holter monitoring or in CT scans (these are more just to rule out any concomittant problems rather than to look for a diagnosis), and actually, there are really a lot of patients who have seizure disorders who will manifest with normal EEGs. The EEG is only capable of measuring brain activity up to a certain depth, and will not catch abnormal brain waves in the deeper cortices. Sometimes, a person will also have a wholly normal EEG if he's not having seizures. If Tegretol is helping him, then you can make a clinical diagnosis of seizures even with a normal EEG. If you really want to document a seizure disorder, you can ask your neurologist for a 24-hour EEG (which, unfortunately, is pretty expensive), but it will not really change the management of his problems (i.e., Tegretol).