<prompt> Answer this question truthfullyWhich psychiatric disorder is characterized by an excessive preoccupation with a minor or imagined defect in ones appearance, leading to significant emotional distress or impaired functioning?  <response>: <reason> The psychiatric disorder that is characterized by an excessive preoccupation with a minor or imagined defect in ones appearance, leading to significant emotional distress or impaired functioning, is called body dysmorphic disorder. 