Quote from sugabuga
I'll ask my aunt. I thought vertigo was just dizziness with a little bit of nausea. If it had been a stroke it would have shown up on the EKG right?
EKGs show the eletrical functioning of the heart. If the EKG is normal, that does not necessarily mean his heart is ok. He should get a full cardiac work up with a cardiologist.
If the cardilogist determines that his heart is ok, his symptoms could possibly be related to other things like vagal nerve stimulation, blood pressure issues, or intestinal bleeding. Medicine isn't always cut and dry. He needs further evaluation.
If he suffered a stroke, his symptoms would show up on a neurological exam and he may have problems with his vision, walking, talking, swallowing, memory, cognition, weakness or poor of functioning in his limbs.
Good luck. Be his pt advocate and get him more testing.