Twelve-year-old Lauren Johnson from Virginia sneezes on average of 12,000 times a day leaving doctors baffled without no-one really knowing the cause.

I can't stop sneezing, it goes on for eight or nine times a minute, Johnson said in the interview.

The sneezing started two weeks ago when she caught a cold and since then she never stopped.

Lauren hasn't gone to school since the outbreak and has visited six different doctors.

Watch interview: