An Arizona woman slept in with a severe migraine and awoke with a British accent, despite having never been outside of the U.S.A.

Michelle Myers of Buckeye, Arizona, has awoken with what sounded like Australian and Irish accents in the past, only to have them go away, but her British accent has remained for two years.

Doctors believe that is all the result of a very unusual medical ailment.

Myers, 45, has a condition known as foreign accent syndrome (FAS). The disease usually happens when the language center of the brain is hurt by a stroke or a serious head injury.

According to the Center for Communication Disorders at the University of Texas at Dallas, the disease alters the person’s voice, making them seem like they are speaking with a foreign accent.

Unlike many stroke patients, a person with FAS normally speaks grammatically well but may emphasize various syllables or remove letters, so an American “yeah” will sound more like a Scandinavian.

Myers told Fox News that her FAS was caused by hemiplegic migraines, which induce symptoms comparable to a stroke. Myers also has Ehlers-Danlos syndrome, which causes skin to be elastic and joints to be flexible to the point of dislocation.

Because of her FAS, Myers has been the target of jokes. Myers told KNXW, “Everyone just sees or hears Mary Poppins.” She is disappointed, but she has accepted that she may never sound like her former self again.

A 2011 study by the National Institutes of Health found that only about 60 cases have been reported around the world.

Myers is presently undergoing therapy for a rare disease with the hopes of being cured.