Hi 2extremes,
This is a tough one. I struggle with it myself. Sometimes I go out with my partner and her grad school friends/acquaintances. I don't quite know what to say at a party.

Especially since I'm not working (in a job) right now due to depression and basically full time treatment; therapy, 12-step stuff etc. I used to not mention it. But the last time I felt kind of fed-up, so I said that I was dealing with personal issues as well as taking care of the house and continuing my artwork. Sometimes I say that I have had some health challenges that came up (all true - major depression is a serious health challenge)... I guess it depends on the person. I tend to read people and can kind of tell if it will be safe to bring in up in an understated way.