Many admissions to the emergency departments with recurrent syncope attacks and seizures in an adolescent boy.

A 16-year-old boy presented with tonic-clonic seizure after he woke up early in the morning. He had experienced 5-6 episodes of syncope, fatigue, weakness and somnolence one year before admission. On admission, physical examination was normal and first line laboratory tests were normal except capillary blood glucose which was 16 mg/dl.