This girl is probably sick and tired of hearing people say "gesundheit."

Katelyn Thornley, of Angleton, Texas has a very bizarre ailment -- she can't stop sneezing. And we're not talking about "all this pollen is killing my sinuses" sneezing, either. No, she sneezes up to 20 times a minute, or 12,000 times a day, for reasons no one can figure out:

It just started in little spurts. I just started sneezing. I thought it was like, oh I’m just allergic to something. I’m constantly in pain with my abdomen, my legs are hurting because I’ve been weak and I can barely eat.”

The sneezing started a few weeks ago and has gotten so bad for 12-year-old Katelyn that she can't play the clarinet in the school band. Heck, she can't even go to school anymore.

Katelyn has seen half a dozen doctors, all of whom are at a loss as to what's causing the sneezing.

The only relief comes when she sleeps and that can only happen when she takes Benadryl and listens to the Beatles.

She said, "Sometimes I wish I could leave my body for a little while so I could watch myself sleep because even in my dreams, I sneeze."