Hi havr you ever found out the cause ? Did they resolve? I have similar issues.mine started about 8 months ago ..when I was put on sotal for my heart rythem problems.since then they have gradualy gotten worse...as of justmow iv had over a dozen attacks for 3 hours.feels like a buzzing then racing heart.my bp goes way up to dagrous levels.iv bern put on medcation to stop my heart rate from going up.I. need some serous help to.