Personality disorders can sometimes appear as an individual acting in an anti-social and/or irresponsible way. The person would rarely describe themselves as being mentally ill, and the difficulties they face would be in conflict with others who try to impose boundaries on them, rather than their own mental health.
Character traits of a person with a personality disorder may fall into one of the following categories:
Paranoid: suspicious, touchy, quarrelsome
Affective: may be a depressive personality, or a cheerful, humorous one (“likeable rogue”)
Obsessive: perfectionist, stubborn, inability to relax
Histrionic: focused on self, excitable, shallow emotional life, high degree of dependency but unable to form long-term relationships.
Schizoid: detached, cold, needing little social contact
Asthenic: succumbs to influences, easily led, very compliant
Psychopatic: ruthless and manipulative, selfish, indifferent to suffering they might cause, aloof from others.
Characteristic features of people with personality disorders:
Difficulty in conforming to social expectations, might seem irresponsible, self-centred, demanding and insensitive.
Learns little from experience, repeated negative outcomes fail to modify behaviour.
Lack of remorse or guilt, they find it difficult to understand why others are distressed behaviour, lack of responsibility.
An inability to delay gratification, thinks of short-term needs and does not worry about consequences.
Since the person with the personality disorder is usually unable to see their disorder or understand how their behaviour impacts others, and extremely unlikely to want to change themselves, it is often the people closest to them that will take the brunt of their irresponsible behaviour and seek psychological help in dealing with it.