Any individual histrionic may exhibit one or more of the following:

Treatment
Treatment is often prompted by depression associated with dissolved romantic relationships. Medication does little to affect the personality disorder, but may be helpful with symptoms such as depression. Treatment for HPD itself involves psychotherapy, including cognitive therapy. Interviews and self-report methods
In general clinical practice with assessment of personality disorders, one form of interview is the most popular: an unstructured interview. The actual preferred method is a semi-structured interview but there is reluctance to use this type of interview because they can seem impractical or superficial. The reason that a semi-structured interview is preferred over an unstructured interview is that semi-structured interviews tend to be more objective, systematic, replicable, and comprehensive. Unstructured interviews, despite their popularity, tend to have problems with unreliability and are susceptible to errors leading to false assumptions of the patient.One of the single most successful methods for assessing personality disorders by researchers of normal personality functioning is the self-report inventory following up with a semi-structured interview. There are some disadvantages with the self-report inventory method that with histrionic personality disorder there is a distortion in character, self-presentation, and self-image. This cannot be assessed simply by asking most clients if they match the criteria for the disorder. Most projective testing depend less on the ability or willingness of the person to provide an accurate description of the self, but there is currently limited empirical evidence on projective testing to assess histrionic personality disorder.
They may go through frequent job changes, as they become easily bored and may prefer withdrawing from frustration (instead of facing it). Because they tend to crave novelty and excitement, they may place themselves in risky situations. All of these factors may lead to greater risk of developing clinical depression. People with this condition can have an impressionistic and undetailed style of speech.Despite these traits they can be prideful of their own personality, and may be unwilling to change, viewing any change as a threat. They may even blame their personal failures or disappointments on others. Causes
Little research has been done to find evidence of what causes histrionic personality disorder. Although direct causes are inconclusive, various theories and studies suggest multiple possible causes, of a neurochemical, genetic, psychoanalytic, or environmental nature. Traits such as extravagance, vanity, and seductiveness of hysteria have similar qualities to women diagnosed with HPD. HPD symptoms typically do not fully develop until the age of 15, while the onset of treatment only occurs, on average, at approximately 40 years of age. Neurochemical/physiological
Studies have shown that there is a strong correlation between the function of neurotransmitters and the Cluster B personality disorders such as HPD. Individuals diagnosed with HPD have a highly responsive noradrenergic system, which is responsible for the synthesis, storage, and release of the neurotransmitter norepinephrine. High levels of norepinephrine lead to anxiety-proneness, dependency, and high sociability. Genetic
Twin studies have aided in breaking down the genetic vs. environment debate.