A 33 year old male who was travelling by a flight staed fighting with one of the air hostesses. The man alleged that the airhostess is actually his 'wife' and she has changed her face, so that she cant be identified. This history is consistent with-

Delusions of misidentification Fregoli syndrome: Delusion of familiar person imposing as a stranger and can take multiple different appearances. Capgras syndrome: Belief that a familiar person is replaced by a stranger or a stranger is imposing as a familiar person.