As far as I know they still don't know what causes it. I believe mine was brought on by stress. Ummm, it seems like a certain teenager

was busted in a car full of alcohol with some guys her & her friend ummmm kindly gave a ride to. Yeah that's what happened. I was TERRRIFIIIEEEED to tell my parents. We were realeased with a citation & we went to another friend's house who made me call my mom to come get me. I was so terrified at what my dad would do my mom was actually relieved when I told her what happened--she thought I had been raped or something. Anyway it was not long after that that the bells pausey happened.
It was thought at the time that only pregnant women got it, I'm guessing from being so pregnant like something was pressing on their nerves. Basically it usually happens in the face only where you're whole side gets paralized. You might get full use back, you might never get use back. There is nothing they can do for you. It's horrible because it effects everything. You can't blink, you can't drink w/o spilling. I have heard some people have gotten down the whole side. Worst part was I was a senior in high school. Talk about embarrassing.