Re: PVC's and dizzy Spells
Yes, some people can suffer from PAC's and PVC's badly with symptoms you describe and even worse. While others get them all the time and never feel them or have any symptoms.
Try not to touch caffeine or drinks with a lot of sugar or carbonated drinks.
Eat low fat healthy food, plenty of fruit and vegetables.
If you have been told they are benign then try the diet and lifestyle changes and hopefully they will get better and go away.
Stress also compounds the symptoms, probably it is the worst. Cause it can turn something mild into something severe within moments.