Reading hobo's doctor's response is why I don't like the phrase MLC - people already think it's something else (50 year old man with a blonde and a sportscar!!). I mean, even though a crisis at mid life is technicallly what it is, you've already picked an uphill battle publicly once you say it. This thing really needs its own distinction, IMO. But then it will be harder for people like us to find info! Catch 22.
I also think hobo's doctor wouldn't have been clued in to changes in neurotransmitters or emotional issues, so that's where general physicians alone would be lost in making a diagnosis. Psychiatry comes the closest - but how many of them seek that? So frustrating.