Dear Mr Ratnam,
Unfortunately, there are no tests to confirm that the epilepsy
is cured! The only conformation is with stopping medications and if he does not have a seizure
further. A normal scalp
EEG does not mean that the patient does not have seizures. It only means that at the time of having the test he did not have seizures.
Therefore, my advice will be to get the guidance of a physician who is well versed
with seizure medications and taper the medications as per his advice. The other thing to keep in mind is that if he does have a single fit when the drugs are being tapered, that will impact his driving licence as well when he is in the US. The pertinent advice regarding the local regulations for driving etc will be given by the physician there.
Hope this helps.