Hello.
I am sorry if I scared you by not mentioning other possibilities. Of course, there are other conditions to be considered. He may have inner ear pathology.
Make sure you get his blood pressure checked. His age does not go with high blood pressure, these days, hypertension strikes at a younger age.
Regards
Could it be anything else?
Hello.
You should ask him to consult a neurologist if he has not done so. There is a possibility of a brain tumor. The symptoms of nausea, vomiting and headache are typical. Fainting episodes are also quite characteristic of tumor.
He should also check his blood pressure.
Regards