Causes

Personality is the combination of thoughts, emotions and behaviors that makes everyone unique. It's the way people view, understand and relate to the outside world, as well as how they see themselves. Personality forms during childhood, shaped through an interaction of inherited tendencies and environmental factors.

The exact cause of antisocial personality disorder isn't known, but:

• Genes may make you vulnerable to developing antisocial personality disorder — and life situations may trigger its development
• Changes in the way the brain functions may have resulted during brain development