PS--Even if nothing suggested on this site is helphul, don't give up hope--keep at it until you find good help. Vestibular (balance/vertigo/dizziness) problems are often difficult to find good treatment for. Doctors are humans who are just trying to collect a paycheck, and because dizziness is somewhat difficult to measure, they rely on patient descriptions of symptoms. If a patient describes a symptom the doctor isn't familiar with, it's easy for them to either pass it off as anxiety or tell the patient, "No, you must be experiencing X, not Y." If a doctor doesn't understand your symptoms, they will not be able to treat you properly. If a doctor isn't listening to your husband, find a new one. The world is big, and there is truly a large amount of medical knowledge out there, if you can find your way to it.

Second opinion services can be helpful. Sometimes an employer will offer one as a benefit. Both Cleveland Clinic and Johns Hopkins offer an online second opinion service, though I think those each cost around $500.

A Carrick trained Functional Chiropractor or Functional Neurologist 'may' help. They usually include a lot of movement testing in the diagnosis battery.

BW, I see your screen name and my brain keeps reading it as Burrito Warmer. LOL

The search function will bring up lots of discussion on vestibular issues and various treatments.

Rarely has JohnsHopkins or Cleveland Clinic been noted as a good source of care. They both have layers to get through to find the right help in many cases.