My husband is 73 and seldom ill. He had a seizure 2 weeks ago, never had one before, and has had no injury. His best friend shot and killed himself a week before this seizure and he had not be sleeping and was very upset. He had a CT, a MRI and a EEG. The CT and MRI were okay, and the hospital said his EEG showed he was prone to seizures,. What would cause this? Wouldn't something show up in a MRI?