I know this might sound a bit off-the-wall, but of late I've been having unusually frequent feeling of lightheadedness / mild vertigo. I am prone to this, as undoubtedly many here, but it's typically well-managed with medication I've been on. The only thing that has changed is my use of an electric toothbrush over the last 2 weeks or so. Indeed, when I use it is feels like the vibrations are being transmitted through the teeth and up into my head. As ridiculous as it might appear, has anyone else experienced this and/or could there be some link? Guess I'll stop using it and see if there is any change!