I m 60 years old, in good physical shape and health. However, I do have a history of sporatic PVC S. I am aware arrhythmia s are common. During a 24 hour period wearing a Holter monitor, it showed that I had runs of PAT, bigeminy, few bouts of trigeminy, not too tachycardic. I don t feel this during the day and usually can detect the arrhythmia s. Now, 3 years later, sporatic bouts of dizziness are occurring. I also experience this right from sleep as I turn my head, in bed. It comes and goes thruout the day, has been happening for several months. Could the nocturnal arrhythmia cause the dizziness. I don t feel arrhythmia while the dizziness is at happening. No history of ear problems.
Thanks for your question on Chat Doctor. Yes,, nocturnal arrhythmia can cause dizziness. As arrhythmia disturb the blood circulation. So blood supply to the brain is also decreased. So I advise you to consult cardiologist and get done repeat 1. Holder monitoring2. 2D Echo. And start regular treatment.  Arrhythmia, if not treated properly can lead to sudden cardiac death. So better to consult cardiologist and start treatment.