Interesting discussion!
MBIB I agree with you. This is an online forum, and this thread is about biochemistry and brain research. If there are peer reviewed articles on this as pertains to MLC, midlife depression, or other symptoms often described by LBS I would love to read them and hope someone could post.
No one here is posting about how to perform amateur exploratory brain surgery on MLCer using simple tools at home. We are just sharing articles of interest, maybe that list some symptoms that sound similar to MLC, maybe just wondering. These are conversations academics, professionals, friends have informally all the time about all sorts of topics. We are just having a discussion, right, but we don't live close to one another and can't meet at a cafe to discuss/joke/ask questions so we do it here. I'm not sure it matters if these discussions end up going down the wrong road or taking a tangent. MLC is horrible but it is also pretty fascinating.
I agree that MLC is an umbrella term. However, I am only one year in and I can see that it is possible to predict behavior and even language patterns, at least among certain subsets of MLCers. Since the onset is apparently so sudden in these cases, it makes sense to want to figure out which region of the brain might be affected.
I think there is a taboo regarding MLC. It is that women in particular are often left with a stigma that their husband "left them for someone else." The stereotype of MLC is that the husband is a silver-haired man in his fifties driving a nice convertible next to a beautiful younger woman. This simple stereotype helps lend to the notion that the man is acting in a way that is harmless, in his own interests, or at least vaguely comical. It makes the wife feel ashamed, not the husband. The stereotype normalizes his behavior and trivializes the impact.
But when we share our stories, we help explain that not only is this not what has happened, there is more to the story. We help show that the shame of abandonment and abuse belongs to the husband, not the wife. We show that the abandonment is just one aspect of a series of behavior changes, sometimes radical and sudden.
The silver-haired man has an empty look in his eye and is behaving erratically at home and at work. His children haven't seen him for weeks, and he has heaped emotional abuse on his wife and blamed her that he has left the family. The woman next to him is his age, twice divorced, and is taking selfies so that the wife (or one of her kids) might see them together on social media. He used his youngest child's college fund to pay for the car. Just one year earlier he was a happy, devoted family man who had regularly told his wife how much he loved her. Almost overnight he seemed to despise her. He has lost most of his friends due to how he has treated his family. He avoids many of the people he used to love.
I am someone who was so bewildered by MLC I told a lot of people about what was going on, hoping to meet someone who had a similar experience. Because I explained in detail what was happening, my friends and family understood that this was not a normal situation or breakup and no one treated it as such. I think it is sad for MLCers that this is not discussed more openly. Maybe some would be encouraged to seek help if it were.