Gaslighting makes confrontation and conflict resolution absolutely impossible. It takes two to work things out, but when you get dismissed as needing counseling or too sensitive, it blocks the road to a further conversation.

Gaslighting can happen in very subtle ways also. Some people are not overt as to say "You are crazy." Good actors could easily act concerned and say that they are concerned about your mental health.

I love Shahida's articles on PC. They are highly informative.