My T has told me that they think labels can be unhelpful - so although I think I dissociate and have other symptoms I have googled that seem to fit with depersonalisation / derealisation - I have never sought a formal diagnosis. From what I have learned, all these types of symptoms can serve as a coping strategy and in some cases can be very useful for protecting us from pscyhological / emotional harm.

I think in terms of therapy, the process to stay connected is the same.

I think SI can be connected with these symptoms - for me at times I use SI to reconnect and other times, SI helps me to disconnect.

It really helped me to talk to my T about my concerns about this. Take care - Soup