In most babies it will be about 3-4 months.
Answer: In its most extreme form, Narcissistic Personality Disorder, a person has a sense of entitlement and ego so outsized that it causes problems in their daily life and relationships with others. But people with personality disorders are not always abusers. Example: Someone who is Antisocial is usually not abusive.
Explanation: I hope this helps :) You've got this.