A pointer to a similar post:
A Sick Personality?As an alter and host, I've felt weary, sad, hopeless about life and it's similar to feeling sick, I guess. I've gone inside just to get away from everything and someone else will come up front. Sometimes alters will recommend I go inside, especially if I get wound up into an angst- and stress-ridden frenzy. Most of us recognize that any of us getting that way and staying there for any period of time is not healthy for the body. I haven't thought about it as having been sick, but when, for example, I follow a little who has been out playing or anyone who went out for a walk, I do certainly feel better, "healed" in a way, occasionally even rejuvenated. I'm not in the same state I was when I went inside and usually can't even connect to why I was feeling that way.
Switching occasionally has been tremendously therapeutic, speaking for my system. During events where I can't really do that for days, like when I'm at a business-like conference, I feel off, depressed and derealization, which normally isn't an issue, grows.