Personality disorders can arise in adolescence or early adulthood. Because a person’s way of thinking is natural to them, they may not realise that they have a personality disorder.
The are several specific personality disorders. Some experts place personality disorders into ‘clusters’. The clusters include; Cluster A personality disorders, which are characterised by eccentric thinking or behaviour; Cluster B personality disorders, which are characterised by being overly emotional or unpredictable; and Cluster C personality disorders, which can be related to fearful or anxious behaviour.
In clinical practice, some personality disorders are encountered more frequently than others. This may not simply be about how common each disorder is. Some personality disorders are just more likely to reach the attention of health professionals.
One of the most common personality disorders is emotionally unstable personality disorder, which is also called borderline personality disorder. People with emotionally unstable personality disorder (which is sometimes shortened to EUPD) may be misdiagnosed with anxiety and depression when the symptoms first develop. This is because one of the core symptoms of EUPD is having an unstable mood. Other symptoms include impulsive behaviour, outburst of emotion, problems controlling behavioural outbursts, a tendency to argue or quarrel with others, disturbances in self-image, feelings of emptiness, unstable interpersonal relationships, a fear of being abandoned and a tendency to self-destructive behaviour including self-harm and suicide attempts.
Other examples of personality disorders include paranoid personality disorder, schizoid personality disorder, dissocial (or antisocial personality disorder), histrionic personality disorder, narcissistic personality disorder, avoidant personality disorder, dependent personality disorder and obsessive-compulsive personality disorder.
The symptoms which present themselves as a result of personality disorder will determine how a disorder is classed.