Antoinette believes that her brother is not really her brother. He has, in fact, been replaced by a double. This is known as _______________ syndrome.

Question

Quizplus · Accepted Answer

Capgras syndrome is a delusional disorder where the individual believes that someone they know, often a family member or close friend, has been replaced by an identical imposter. This fits the scenario described in the question, where Antoinette believes her brother has been replaced by a double. Cotard's syndrome is a disorder where the individual believes that they are dead, do not exist, or have lost their vital organs. Barlow's and Durand's are not recognized as specific syndromes or disorders.

Antoinette Believes That Her Brother Is Not Really Her Brother