He has gone to cardiologist, neurologist, primary care physician - he has been taken off 2 blood pressure meds and anti-anxiety meds - no improvement. Drs say he has "aging brain". he was previously very active - he lives alone and if he cannot drive, must identify some options - assisted living visits have left him feeling depressed.
Not much has helped dad, even the Antivert they prescribed. He'll have a good week, then is incapacitated for several days with what he calls, 'the sways'.
I wish I had more advice for you than sympathy - hope something can be done for your dad.