Some general signs of a personality disorder include problems maintaining healthy relationships, blaming other people for problems and feelings of loneliness, according to Healthline. Some symptoms are specific to personality disorders within Cluster A, Cluster B and Cluster C, states Mayo Clinic.
Cluster A personality disorders consist of paranoid personality disorder, schizoid personality disorder and schizotypal personality disorder, reports Mayo Clinic. Symptoms of paranoid personality disorder include paranoia, distrust and tendency to hold grudges.
Signs of schizoid personality disorder include lack of interest in personal relationships, limited emotional expression and inability to take pleasure in most activities, states Mayo Clinic. Signs of schizotypal personality disorder include peculiar dressing, speech, thinking and behavior.
Cluster B personality disorders include antisocial personality disorder, borderline personality disorder, histrionic personality disorder and narcissistic personality disorder, explains Mayo Clinic. Symptoms of antisocial personality disorder can be persistent aggression, lying, stealing and problems with the law. Symptoms of borderline personality disorder include impulsive behaviour and unstable relationships with others, states National Health Service. Symptoms of histrionic personality disorder include seeking attention and excessive concern with physical appearance. Symptoms of narcissistic personality disorder include self importance, envy and taking advantage of others.
Cluster C personality disorders include avoidant personality disorders, dependent personality disorder and obsessive-compulsive personality disorder, notes Mayo Clinic. Symptoms of avoidant personality disorder are inferiority complex, shyness and social inhibition. Symptoms of dependent personality disorder are over dependence on others, submissiveness and tolerating abusive treatment. Symptoms of obsessive-compulsive disorder include extreme perfectionism, obsession with details and controlling behavior.