Suggest Treatment For Persistent Dizziness

For the last forty years or so I have occasionally (a time or two a year) experienced periods of dizziness that have lasted anywhere from a few days to a week. However, over the last couple of months my recent dizziness has been more consistent, generally occurring when I lie down and mostly when I roll to one side or another. A few weeks ago I tried the Epley maneuver, and it seemed to more or less resolve the issue, though not completely. Yesterday, during a lengthy dental appointment when the dental chair was tilted way back this issue really became stirred up. It settled enough for me to drive home. I did the Epley, and as the day progressed seemed to feel better. But this morning I awoke to dizziness and feeling clammy. I finally dry heaved a bit, and now feel somewhat better. But I m really getting tired of not feeling well or not knowing when this dizziness is going to interrupt my day.