Isolation (physical, social or emotional) is often used to facilitate power and control over someone for an abusive purpose.
[11][12] Isolation of the victim from the outside world is an important element of psychological control.
[13] Isolation includes controlling a person's social activity: whom they see, whom they talk to, where they go and any other method to limit their access to others.
[14] It can also include insisting on knowing where they are and requiring permission for medical care.
It includes preventing access to opportunities, physical or social isolation, withholding necessary information, keeping the target "out of the loop", ignoring or excluding.