Benign paroxysmal positional vertigo (BPPV)

I think I have Benign paroxysmal positional vertigo! Sounds terrible, doesn't it?! It's not serious, though, as you will see from the description below...just really annoying! For several nights now, I've had terrible vertigo when I turn over during the night, but then I'm fine once I get up! I've had vertigo before, either inner ear trouble or dehydration, but I am not suffering from either of those things right now. I looked up dizziness online and this is part of what I found at mayoclinic.com. Apparently, some little position-sensing crystals in your ears can become dislodged and cause this...hmmm. I wonder if the fact that I hit my head on the roof of the van recently has anything to do with this? I hit it pretty hard...

Definition
Vertigo is the sudden sensation that you are unsteady or that your surroundings are moving. You may feel like you're spinning around on a merry-go-round or that your head is spinning inside. Benign paroxysmal positional vertigo (BPPV) is one of the most common disorders that can cause vertigo.

Benign paroxysmal positional vertigo is characterized by brief episodes of mild to intense dizziness associated with specific changes in the position of your head. It most commonly occurs when you move your head in a certain direction, lie down from an upright position, turn over in bed or sit up in the morning. Moving your head to look up or look down also can bring about symptoms of benign paroxysmal positional vertigo. You may also feel out of balance when standing or walking.

Although benign paroxysmal positional vertigo can be a bothersome problem, it's rarely serious except when it increases the chance of falls. You can receive effective treatment for benign paroxysmal positional vertigo during a doctor's office visit.