Dizziness when lying down
I'm developing a curious and somewhat unsettling pattern, in which I'll be subject to spells of vertigo when lying down with my eyes closed. They don't strike as I lay down; they'll come on suddenly, typically after I've been down or asleep for a while.
As soon as I open my eyes and shift positions, I'll suddenly be right as rain; the dizziness only affects me while lying still.
This first happened to me about a month ago, and then again several nights ago, and has bothered me the past two mornings.
I plan on seeing my physician about it, especially if it persists, but I was curious if anyone has ever encountered this type of problem and what the cause was.