I know someone with vertigo, it has nothing at all to do with height, as far as I am aware and also what I have seen online. If it does have to do with heights

I know someone with vertigo, it has nothing at all to do with height, as far as I am aware and also what I have seen online. If it does have to do with heights I suspect it is a change in air pressure aggravating it? But maybe there is more than one "vertigo". I might be wrong. Not a doctor!