Research has found 2/3 of patients diagnosed with histrionic personality disorder also meet criteria similar to those of the antisocial personality disorder, which suggests both disorders based towards sex-type expressions may have the same underlying cause. Some family history studies have found that histrionic personality disorder, as well as borderline and antisocial personality disorders, tend to run in families, but it is unclear how much is due to genetic versus environmental factors. Both examples suggest that predisposition could be a factor as to why certain people are diagnosed with histrionic personality disorder, however little is known about whether or not the disorder is influenced by any biological compound or is genetically inheritable. Little research has been conducted to determine the biological sources, if any, of this disorder. Diagnosis
The persons appearance, behavior and history, along with a psychological evaluation, are usually sufficient to establish a diagnosis. There is no test to confirm this diagnosis. Because the criteria are subjective, some people may be wrongly diagnosed.
They will work hard to get others to pay attention to them, possibly as a method of testing the stability of relationships. They may enjoy situations in which they can be the center of attention, and may feel uncomfortable when people are not paying attention to them. It is common for people with this disorder to wear flamboyant clothing, try body modifications, and fake medical conditions in an attempt to draw others attention. They may display inappropriately sexually provocative, flirtatious, or exploitative behavior. Sexting and exhibitionist behavior are also behaviors people with this condition sometimes exhibit. Some people with histrionic traits or personality disorder change their seduction technique into a more maternal or paternal style as they age. When their desire for attention is not met, it can heighten the severity of their symptoms. They tend to be impressionable and easily manipulatable, especially by those they respect.Patients with HPD are usually high-functioning, both socially and professionally. They usually have good social skills, despite tending to use them to make themselves the center of attention. HPD may also affect a persons social and romantic relationships, as well as their ability to cope with losses or failures. People with HPD tend to consider relationships closer than they usually are. They may seek treatment for clinical depression when romantic (or other close personal) relationships end. Substance disorders, such as Alcohol Use Disorder or Opioid use disorder, are all common in patients with Histrionic Personality Disorder. They are also at higher risks of suicide, body dysmorphia, and divorce.