Forgot to add that I started using the CPAP in April. The ENT also recommended a balance study. I am not convinced it is not caused by use of the CPAP.
Yes, I am experiencing the same exact symptoms. I saw my primary doctor, she checked my ears. All clear. I saw an ENT, same thing. Ears, nose and throat are all clear. When the vertigo hit, I stopped using the CPAP. Prior to the major vertigo, I would wake up dizzy. Last Tuesday is when the vertigo hit. Room spun and I threw up twice. All the Doctors said it could not be the CPAP machine. I had not used the CPAP since because I was still experiencing the vertigo and feeling dizzy. Yesterday, Saturday, was the first day that I felt better. So I tired the CPAP machine. In the middle of the night I had to get up. I was dizzy again.