histrionic personality disorder

n. A pervasive and persistent pattern of adjustment characterized by excessive emotion expression and attention seeking. Persons with this disorder need to be the center of attention; if they are not, they feel uncomfortable and draw attention to themselves in a variety of ways, including flirtatiousness, seductiveness, exaggerated and shallow expressions of emotion, and vague speech. They tend to have shallow relationships, which they believe to be deep, and to be easily influenced by others.