People with antisocial personality disorder show instability in their relationships, self-image, and mood, and a lack of control over impulses.

Antisocial Personality Disorder

The diagnosis given a person who is in frequent conflict with society, yet who is undeterred by punishment and experiences little or no guilt and anxiety.

Instability

The state of being prone to change or failure; lacking firmness or steadiness in social, emotional, or physical realms.

Impulses

Sudden, involuntary urges to act or do something, often without premeditation.