The<unk>  is a rare delusional misidentification<unk>  in which a person suffers from the delusion that he or she has a<unk> or doppelgänger with the same appearance, but usually with different character traits and leading a life of its own. Sometimes the patient has the idea that there is more than one<unk>  The<unk>  is usually the result of a neurological disorder, mental disorder or some form of brain damage, particularly to the right cerebral hemisphere.
Sometimes the delusion takes the form of a conviction that whole or part of the patient's personality has been transferred into another person. In this case depersonalization may be a symptom. One example from medical literature is of a man who became depersonalized after an operation and was convinced his brain had been placed into someone else's head. He later claimed he recognized this person.
The<unk>  is sometimes comorbid with Capgras delusion, leading to it to be named<unk>  Capgras<unk> " in some instances.
Syndrome of subjective doubles
Marasmus
Gratification disorder
Priapism
Melancholic depression
Female sexual arousal disorder
Sexual obsessions
Melancholia