Gee, I don`t know if I can! I just asked her about it, and she didn`t have all that much to say.
Exact same symptoms that your wife experienced, but Accumulatorette realized it was some kind of Inner Ear issue. After DIY Earwax-type products didn`t fix it, she went to her usual Doc, who referred her to a specific person at an ENT Specialty Practice. That guy, who`s basically all about this specific issue, "rearranged" those crystals- problem solved...for a while.
Whatever the "treatment" was, it was easy-peasy from the Patient`s perspective, out-patient procedure with zero drama, must`ve been covered by Medicare or her Supplemental, since I don`t remember any bill (and I probably would

).
Recurrence prompted another trip to the same guy, second treatment also worked, and/but the problem hasn`t recurred since and it`s been a few years now.
Apparently, it`s common enough that there are Specialists for it, just gotta find one.
Sorry, wish I could tell you more. Seems like the big thing was that my wife`s Internist knew somebody to consult, might`ve just been one of those lucky things that keep falling into place whenever my wife or I have a problem.