In reply to ederton and sasha2647 I have been trying to figure out this problem I have just like you. I think a lack of proper sleep might be playing a role. As a physician myself and having had this in varying intensity for over 8 yrs now I have experimented with alot of things. One prior post said her vibrations disappeared when she went on nasal CPAP. This would greatly improve her sleep quality. I tried to catch up on sleep by taking a nap and going to bed earlier and have noticed that the vibrations now have almost totally abated. I suggest you try the same and see what results. If not helpful let me know and I have some other possible suggestions as well. I know this seems a bit odd as I am sure all of us have gone through periods of sleep deprivation without getting vibrations in the past but maybe this is something that can come on with age and lack of good sleep. I have investigated this much as you have including checking for sleep apnea and have not found any known medical reason and my colleagues have no idea either. Catching up on sleep has made a big difference I believe but only time will tell as it has not been that long yet. I would appreciate your comments after trying the above.