My niece had a brain tumor removed one and half years ago and was just told the symptoms she was having was seizures caused by the scar tissue that is a result of brain surgery not the symptoms of a mini-stroke like we thought because of the headache, numbness and tingling with arms and leg feeling heavy on the left side of face and body only. Placed on seizure medication, how long before she will experience a span of time between episodes? any help would be appreciated. Thanks A.L.