Definition:

a disorder in which a person falsely believes that a friend or relative has been replaced by an identical impostor

Example:

"Capgras delusion can be brought about by a variety of conditions - changes in brain chemistry associated with different mental illnesses, or physical trauma to the brain - but the delusion always involves the distinct feeling that the people around you have been replaced by impostors." - Jad Abumrad and Robert Krulwich, NPR Morning Edition, March 30, 2010

Submitted by:

Maryam Nikzad, TX