‘Mystery’ condition causing ‘terrifying’ hallucinations in one million Britons

More than a third of medical professionals are unaware of a condition which could be impacting as many as one million people in the UK, a poll shows

Nina Chesworth has yet to receive a diagnosis after four-and-a-half years (Nina Chesworth)

More than one-third of UK health experts are not aware of Charles Bonnet syndrome - CBS - a condition which can cause vivid, and sometimes frightening, hallucinations.

A poll of 1,100 health experts - including GPs, doctors and optometrists - found 37 per cent were not aware of CBS.

The condition is not caused by mental health problems or dementia. It is purely due to a loss of sight - 60 per cent or more - which reduces or stops the regular messages from the eye to the brain.