The National Institute of Mental Health (NIMH) is distancing itself from the the American Psychiatric Association and its upcoming Diagnostic and Statistical Manual of Mental Disorders (DSM-5).
While they acknowledge that the goal of DSM "is to provide a common language for describing psychopathology" they are no longer convinced that approach has value if we are going to solve 21st century cognitive science problems. It is, paraphrasing the statement of Thomas R. Insel, M.D., Director of the National Institute of Mental Health, more of a dictionary than a manual. He uses the term "Bible" instead of 'manual' but I would have used 'glossary' rather than 'dictionary'.
The Groningen Protocol, introduced in Holland in 2005, was devised to create a standard for doctors who had families that wanted to end the suffering of sick newborns for humanitarian reasons. It outlined parameters to help identify situations in which euthanasia is warranted and wouldn't land anyone in jail.
With the popularity of dark matter and dark energy as blanket terms for 'this is weird and we don't understand it but we are studying it, ain't science awesome?' in physics, it was only a matter of time before it caught on elsewhere.
So we have dark lightning and the life sciences made sure they caught the wave, migrating non-coding DNA (factual = booooring) from the colloquially misunderstood blanket term 'junk DNA' to the cooler and edgier 21st century 'Dark Genome'.