It's hard for us to remember that DDNOS-1/DID is not an easy thing for anyone to come to terms with, especially friends who might not understand it, or be comfortable with the idea of it, or be used to it, or might not know anything about it, or anything like that.
Have you tried explaining how DID develops, how it works, scientific stuff, etc., to your friends?
Here are some websites that you could maybe show them or something to help explain stuff:
http://www.dissociative-identity-disorder.net/http://www.dissociative-identity-disorder.org/For the most part, if friends just aren't willing to even let me have the space and freedom to accept myselves and be myself, then those aren't friends I want in my life.
But if they're simply having trouble with understanding, or just aren't comfortable with talking about it or interacting with alters all of a sudden, or don't know anything about it, then I try to help them understand a bit more, or I accept that it makes them uncomfortable and so I don't talk about DID stuff to them, and stuff like that.
Because to them, this is just all of a sudden, out of the blue, you're asking them to write and communicate to a different part of you, with a different name. That can be rather uncomfortable and be a very big change to friends and people who know you in general. They've gotten used to your name, they've gotten used to you just being you, not having a condition, or having alters. Despite there being signs and symptoms in the past, it's different when things actually have an explanation like a condition, and it's different when switches are being made obvious by using alters' names and such.
Give your friends some time to adjust to the concept, and try to be patient and understanding with them, because at least you have what's going on to help things make sense and such. They're just going off of what you're telling them and any prior information they may have been exposed to. So, you know how hard it can be for hosts to come to terms with this and accept it. I imagine it's even hard to come to terms with it and understand it when you're a friend of someone with DID since you don't have it yourself and don't know what's going on and such.
Maybe try to help your friends learn and understand a bit more, and then if they're still unsupportive, I'd consider cutting them out of your life.
I have friends that are uncomfortable with the DID stuff. So I try to be the only alter that socializes with them and I try to not talk about DID stuff. But they aren't unsupportive and they don't tell me what I should and shouldn't do, and they don't care if I do happen to switch, they're just uncomfortable with a lot of exposure to the DID stuff, and while they support us, they'd rather just be left out of DID stuff and topics and not really think about it. Which is fine. Long as they support us and don't complain if I can't hang out because I'm not around, that's fine with me.
-Cassandra