Capgras Syndrome
A rare neurological condition which leads a person to believe that a close acquaintance, usually a parent, partner, child or sibling has been replaced by an imposter. Capgras syndrome can occur in a number of organic brain diseases such as Parkinson’s disease and Alzheimer's dementia.
The syndrome is named after Joseph Capgras, a renowned French psychiatrist who was instrumental in raising awareness of l'illusion des sosies (the illusion of doubles). Like the woman who believed that her husband, children and many of her friends had been replaced by impersonating doppelgängers; a case Capgras first reported in 1923.
Here are 6 bizarre disorders which demonstrate that the human brain is capable of playing host to a world where reality is most definitely stranger than fiction! (click the arrow buttons below to advance)