What are some signs of having a personality disorder?

Recurrent patterns. To be a disorder, a personality style must cause impairment in day-to-day life. There are such a wide range that the type of impairment may be anything from never getting along with others to being a "neat-freak" who can't tolerate any level of disorder. The key is longstanding, repetitive problems over time because of the person's behaviors and interactional styles.