HI. It is difficult for any of us to help much remotely but a few questions. Does your boyfriend monitor his blood sugars regularly thru the day as needed in conjunction with his insulin injections. I do wonder whether his 'seizures' may some times actually be diabetic hypos due to the blood sugar going below 3-4 mmol? The symptoms you describe are similar. Make sure he is aware of his blood sugar readings during or shortly after one of these seizures. I'm surprised at him saying that his sugars go up when getting excited. I don't think many of us would expect our sugars to rise by much, if any, thru short term emotional changes. Obviously there may be medical conditions we are not aware of causing these effects.