My partner has dissociation. It takes the form most often as "derealisation" (the feeling that this world is a simulation), lack of memories about certain aspects of his past (possibly confabulation to replace these memory gaps) and a milder form of DID. In that most of the time the "aspects" as we call them, have mostly continuous memory of being attached to the one man, and so they are more like "emotions/moods with personalities" than full-blown "alters" but occasionally such as when my partner is suicidal, an aspect will step in and become a full-blown "alter" like in classic DID, in this situation the alter is completely "other" to the personality I know as my partner, even when he has his "aspects", because the way of speaking, voice, mannerisms, emotions everything, is just different. One time I called my partner and heard another voice on the line and instantly knew it was an aspect, and I said "hello (aspect name), can I speak to (my partner)" and he literally said "(Partner) isn't here right now, he tried to kill himself, most inconvenient to me, as I don't want to die, so I am taking control of this body until (Partner) no longer feels this foolish urge". The alter sounded very blase, almost laughing it off. Apparently this alter is a devil-may-care, almost narcissistic alter, concerned with self preservation only, and not even sympathetic to my partner's emotional pain, finding it worthy of ridicule. A few hours later my partner resurfaced, and I asked him did he remember the alter taking over, and he said "I don't have very strong memories of it, it's very hazy, I felt I was in darkness and quiet with muffled words, but I remember the gist of what happened, no details though". One of only 2 times that has happened in my experience, each time very unsettling though.