I've had the opposite attitude on my end --- I tried to explain everything in detail; my good experiences, my dark night anguish, my insights, etc.
There were some good results and some bad results. My mom really understood what dark night was like, since she had been through depression herself quite a few times. But when I explained to her what I was aiming at, she would be alarmed and convinced I was aiming at "indifference" (what a cliché, hun?). My father paid a lot of attention and took great intelectual interest in what I was striving for, and as a very positive bonus, he decided to start doing exercise (and this happened because I convinced him to try a chi kung-like exercise I was doing at the time), and is now doing better from his joints. I think he is curious to see where meditation will ultimately take me, and maybe he will start doing it too, if he is likes how I ultimately turn out.
On the other hand, whenever I talked to others about my condition expecting to feel relief through their understanding, then for some mysterious reason people would react negatively, reject what I was saying, and interact with me in a way that brought me no relief, but tangled them somehow in the painful knots in my mind (partly their behavior, partly my own distorted interpretations). Dark night brought an itchy rash into some of my friendships, and I am still working on recovery to this day (and successfully, I might add

). Furthermore, the fact that I was so descriptive and open about my symptoms caused great concern and stress to my parents, which also lasts to this day, and which I would rather have avoided.
So, I would recommend being highly alert to when you are talking to someone because you want this person not to worry about what you are going through, and when you are talking to someone because you want this person to "understand" and somehow relieve you of your condition. The first conversation might be beneficial for this person, the second will probably not (and it won't help you either, only practice and common sense seem to help).
Take care

Bruno