Personality disorder (PD)

Personality disorder refers to patterns of behaviour resulting from psychological difficulties that differ markedly from those expected by society and lead to distress or suffering to the affected person or to others. The condition usually becomes noticeable in adolescence or early adulthood and persists over a period of time.

Common problems include difficulty with relationships and low self-esteem.

There is no consensus as to the cause or the best treatments. The condition tends to improve over time and can be successfully treated with talking therapies when people are motivated for change.