My fiance has been on seizure medication since childhood about 2 years ago he had a Grand Mal Seizure and was hospitalized fo 5 days. His Neurologist continued his Phenobarb but uped the milgrams and started him on Vimpat. He is 49 good health and after his hospitalization took up playing racquetball again. He experiences I believe some form of blackouts which only last several minutes but I have to walk him around and then he is fine. His doctor said it wasn't neurological and sent us to a heart doctor who after all the tests said he was fine. What to do now. What is causing these symptoms and what can we do to correct it. He is about 5'11" around 198-200lbs.