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.