Paris syndrome (Wikipedia)
Paris syndrom is a condition exhibited by some individuals when visiting or going on vacation to Paris, as a result of extreme shock at discovering that Paris is different from their expectations. The syndrome is characterized by a number of psychiatric symptoms such as acute delusional states, hallucinations, feelings of persecution (perceptions of being a victim of prejudice, aggression, or hostility from others), derealization, depersonalization, anxiety, and also psychosomatic manifestations such as dizziness, tachycardia, sweating, and others, such as vomiting.