How can you know if you suffer from histrionic personality disorder?

Histrionic: Excess emotionality, attention seeking, seductive or provocative behavior, dramatic, easily influenced by others.

Histrionic: The hallmark of a histrionic is that the person has to be at the center of attention at all times. It's like watching an actor who is always playing a role "on stage" and very uncomfortable with NOT being the center of attention. Get a full psychiatric evaluation for what bothers you. Do not diagnose yourself.