Someone who is in a psychological state in which they feel disconnected from immediate experience is experiencing

De-realization

Explanation:

De-realization is a process in which a person feels detached from the external world. In this, the individual feels detached from friends, society, peer groups even from family. The individual would not recognize their family members. He/she started to behave like a stranger with their family members. An individual realize that the environment is foggy, detached and seems unreal and distorted.  

Some coping mechanism is there:

To cope up with De-realization: A person should pinch his/her skin with their hands to realize that they are in reality. Hold something cold or hot so can a person realize the real state.  

answer; self_ disclosure;