Personality disorders (PD) are deeply ingrained, maladaptive patterns of behaviour which appear from late childhood to early adulthood.
“an enduring pattern of thoughts, feelings, and behaviour in an individual which makes us differ from one another” (1).
These disorders are characterised by very longstanding symptoms which have been present more or less unchanged throughout the patient's adult life. This is the principle distinguishing factor between personality disorders compared to a neurotic or psychotic illness which results from a morbid process of some kind and has a more recognisable onset and time course (1).
Cause of PD is thought to be a result of multiple interacting genetic and environmental factors.
Last reviewed 01/2018