My daughter found out that it was the Crystals in her ears that was causing her problem.
The doctor said to position yourself on the bed where- when you are laying down on your back your head is hanging off.
You will probably need someone else there because you will get dizzy and may need help getting back up.
First, sit up == turn your head to the right and lay back keeping your head to the right, and your head off of the bed. If you don't feel dizzy sit back up and turn your head to the left--lay back again keeping your head turned ---if you feel dizzy -- it's because the crystals have slipped out of place. STAY THERE for a minute or so. It's scarry when you get dizzy and you may even get sick to your stomach. When you do this and feel dizzy, have someone check your eyes, usually they are quivering. then you know it's the crystals and doing this two or three times a day for a week should help put the crystals back in place.
Syl