I will tell you an absolutely true story about my experience with this.....
I was umpiring in the Cape Cod baseball league back in 1990. There is a field in Harwich which is cut out of the woods, and they have the high school track around it.
So I get to the park early, and take out my wedge and start hitting shots through the uprights. I skulled one, went to the woods to go get it and bang, get bit by something.
So two days later I am minding my own business eating a sandwich at lunchtime and I go to take a bite and the sandwich just falls right out of my mouth.....weird, because if you have seen me, food doesnt seem to miss me that often.......All of the sudden the right side of my face is paralized. Cant blink, can't move my mouth......nothing.
Now, being the idiot that I am, I drive off to the ballpark to go work my game that night. I couldnt afford not to work, I needed the money. I of course dont tell a soul what happened, I just go work the game.
I am working first base, and in about the 5th inning, I go to call a runner out on a bang bang play at first base, and I cant really open my mouth now, so nothing comes out, like I am in a silent movie.....coaches just look at me weird, I try to play it off.....blah blah, blah, I finish the game, and afterwards, I go see the trainer, who immediatly calls for an ambulance and sends me to the hospital.
Get to the hospital, they are throwing things on me left and right, oxygen, whole works.....I am trying to tell them I am fine, just cant move my mouth wont listen......they think I am having a stroke!
So they run all the tests, which all come back negative.....doctor comes in and asks me if I had gotten bitten by anything lately.....so I show him the big giant mark on my arm.....Bingo! Lyme Disease, with Bell's Palsy.
Two weeks of antibiotics and it all went away, never to return. I am told I was extremely lucky.
PS, turns out most of the players and coaches liked it better when I couldnt open my mouth....go figure.......