The first time I was traveling in China with a large tour group (no ill effects, my travel partner let me sleep it off and the next day I was fine) (the hotel doctor spoke no English). The second time I was visiting my father in a nursing
home in Calif. I was taken by ambulance to hospital kept for three days and given many tests(MRI,CAT,spinal tap). No neurelogical problems were discovered.The DMV would not allow me to drive for a year unless I was taking a drug for epilepsy.