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A Very Important Person or VIP is a person who is accorded special privileges due to his or her status or importance.
Examples include celebrities, heads of state/heads of government, major employers, high rollers, politicians, high-level corporate officers, wealthy individuals, or any other notable person who receives special treatment for any reason. In some cases, such as tickets to events, VIP may be used as a title in a similar way to premium, and these "VIP tickets" can be purchased by anyone.
VIP syndrome is when a perceived VIP uses his/her status to influence a given professional to make unorthodox decisions under the pressure or presence of the individual.
The phenomenon can occur in any profession that has relationships with wealthy, famous, and/or powerful clients or patients, particularly medical or airline professions.