Texas girl Katelyn Thornley sneezes up to 12000 time every single day

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If you think hayfever is bad then you haven't met Katelyn Thornley. It only started a couple of weeks ago and she's not stopped since.

Up to 20 times a minute the 12-year-old erupts, in a continuous burst of high-pitched 'achoos' which is around 12,000 sneezes every day. Doctors in Angleton, TX, are perplexed with the 12-year-old girl with a non-stop sneezing problem.

Typical conditions that cause regular sneezing, such as viruses, colds and allergies, have been ruled out.