What is histrionic personality disorder that psychologist says actress Amber Heard has?

Histrionic personality disorder, that a psychologist said actress Amber Heard has, is also known as a dramatic personality disorder, as per US' National Library of Medicine. It is distinguished by a pattern of exaggerated attention-seeking behaviours. For people with histrionic personality disorder, their self-esteem depends on the approval of others, as per Cleveland Clinic.