This is a rare disorder and it is mostly common with people suffering from schizophrenia, dementia or those who suffered a brain injury. The condition manifests as a delusional belief that an acquaintance, usually a family member or a spouse, have been replaced by an identical looking impostor.

This is a rare psychiatric disorder in which a person holds the delusional belief that he is dead, does not exist or has lost blood or internal organs. Sometimes it might include delusions of immortality.

This condition is characterized by extreme self neglect, reclusive tendencies and compulsive hoarding. It was named after the famous Greek philosopher Diogenes, who used to live in a barrel. After Alexander the Great asked him what he wanted most in his life, he replied he wanted him to get out of his sunlight. Although he was maybe an excentric, there is no proof that Diogenes neglected his won hygiene.

This is the opposite of the Capgras delusion and it is a rare disorder in which a person holds the belief that different people are in fact a single person who changes appearance or is in disguise.

This syndrome refers to a psychological reaction seen in an abducted hostage who develops sympathy for his kidnapper. This term has its origins in a 1973 bank robbery in Stockholm, Sweden, when bank employees were taken hostage for 5 days. After the event, they showed sympathy for their captors by refusing to testify against them, and a woman even married one of them after he was imprisoned.

The condition refers to a group of mental phenomena which involve the presence of religiously themed obsessive ideas and delusions after visiting Jerusalem. This syndrome affected Jews and Christians of varied backgrounds, but all of them had already been diagnosed with a mental disorder prior to suffering from this condition.

This is the exact opposite of the Stockholm syndrome and it refers to the hostage takers who become more sympathetic to the needs and plights of the hostages. This syndrome was named after an incident which took place at the Japanese embassy in Lima, Peru. Hundreds of people were taken hostage at a party, but even though this lasted for more than months, the kidnappers released most of the hostages in a few days.

-This is a condition exclusive to Japanese tourists and national who tend to suffer from a mental breakdown when visiting this city because they cannot separate their idyllic view of the city from the movies they have seen. This is basically a severe form of “cultural shock”.

This syndrome refers to a condition from which some people suffer when they see an incredibly beautiful work of art or when presented with a breathtaking view.Among the symptoms reported there is diziness, rapid heartbeat, confusion and even hallucinations. The syndrome was named after the famous French writer Stendhal, who described his experience when visiting Florence in 1817.

This is a rare condition and it is manifested by the belief that a place or a location has been duplicated, existing in two or more places simulatneously, or that is has been relocated to another site.