Why do I seem to get vertigo only when doing certain tasks?

There are some special forms of dizziness. Indeed, one very, very common form of dizziness, perhaps the more common form of dizziness, is called BBPV or benign paroxysmal positional vertigo. Let's call it positional vertigo, which means that you get the vertigo only in certain positions. Typically, when the patient lies down in bed, or when the patient turns over in bed, or when the patient looks up, like looking up a shelf. That particular type of dizziness is due to some crystals in the inner ear that when you move the head, those crystals shift within the inner ear, and that movement within the inner ear is what causes the vertigo in the patient. So most patients with vertigo when lying down or turning over in bed will be due to this BBPV, to this positional vertigo, the crystals in the inner ear.