everyone has a question about this vibration problem and it seems to be quite prevalent but no one has an answer. I'm begining to think that cell phones carried in your pants pocket set on vibrate have causes this phenomenon. I told my husband the very first time this vibration happened that it felt like my cell phone vibrating. This has been happening to me for three months and just today I looked on the web and found all these people with the same medical issue. What causes this vibration?