Hmm...thanks, everyone. I will pay attention and see if it could be related to a vision problem I'm not noticing. But it seems to be worst when I flip over in bed. I did the Epley maneuver, which is supposed to lock away the floating crystals, if they're the cause of the vertigo. Felt immediately better, though the exercise itself is murder--but we'll see.

As for vertigo and ear ringing, there's Meniere's disease to consider. That was high on my list of possibilities back when my only symptoms were balance troubles.

Abby