Sarah Colwill believes she has Foreign Accent Syndrome (FAS) which has caused her distinctive West Country drawl to be replaced with a Chinese twang, even though she has never even visited the country.

The 35-year-old from Plymouth, southwest England, is now undergoing speech therapy following an acute form of migraine last month which reportedly left her with a form of brain damage.

"I moved to Plymouth when I was 18 months old so I have always spoken like a local. But following one attack, an ambulance crew arrived and they said I definitely sounded Chinese," she said.

"I spoke to my stepdaughter on the phone from hospital and she didn't recognise who I was. She said I sounded Chinese. Since then, I have had my friends hanging up on me because they think I'm a hoax caller."

Colwill added: "The first few weeks of the accent was quite funny but to think I am stuck with this Chinese accent is getting me down. My voice has started to annoy me now."

FAS has been documented around the world and is usually linked to a stroke or traumatic brain injury. It was first recorded in the early 20th century and there are thought to be only a couple of dozen sufferers around the world.

How odd! What would you think if this happened to you?