Narcissism is a generalized personality trait characterized by manipulation, egotism, vanity, conceit, selfishness, or lack of empathy.
Narcissists also display a lack of Empathy, disregard of personal boundaries, with-hold love and affection often and manipulate their friends, children and work associations through 'Gaslighting'.
Gaslighting is, according to the Urban Dictionary&
Forum:
"Cults," Sects, and "New Religious Movements"