Hi there Thank you for writing to us I am sorry to know about your father. There are a couple of main causes that need to be considered in a diabetic whenever there is a fit. The first thing is that we need to consider low blood glucose as a cause. Diabetic people who are on glucose lowering medications like Daonil can get a low blood glucose that is lower than required. When the blood glucose gets too low then the person can have a fit. This is the reason why I think that the other doctor said that Daonil probably is not too good particularly if his blood glucose has been in the normal range or in the lower range. The second thing is that strokes are very common in patients with diabetes. Just like suggested in the EEG report, this may be an ischemic stroke or a stroke as a result of decreased blood supply to the brain. Diabetic patients are all the more likely to have strokes and this can lead to fits which has what has happened I think. After a stroke like this he should be on medications to stop him from having further strokes which include medications like epival (valproic acid). He should also be on medications to prevent further strokes which include medications like aspirin, clopidogrel and cholesterol lowering medications like rosuvastatin. Kindest Regards