I happened to find this clip after I wrote the text for this entry.
Just when you thought there couldn't possibly be any more stutter word police, I'm back with more! This one only came up because I met a man with a neurogenic case of stutter last week. Neurogenic stutter describes a condition that comes on due to either physical damage to the brain, through injury or stroke, or secondary to a disease like Parkinson's. Neurogenic stutter can also be caused by prescription drugs, and may disappear when the drug or dosage are changed.
Until now, it hadn't occurred to me, but using neurogenic in opposition to developmental stuttering is not proper usage. And in fact, there is another, correct term used: acquired stuttering. These two terms correctly differentiate between a condition that comes on during development and one that is not development-related, but is 'acquired' regardless of the developmental process.
The Stuttering Foundation has an informational web page for neurogenic stuttering here. Interestingly enough, in the reference section, they cite multiple papers that use the term 'acquired stuttering,' and two using 'acquired neurologic(al).' So obviously, the profession hasn't made up its mind on this subject.
My preference goes beyond wanting to align the rationale for the two terms along logical, developmental/non-developmental lines. The reason is that I believe that the evidence is clear (to me, at least), that developmental stutter is neurogenic. The only difference between the two conditions is that one results from existing neurological abnormalities and is expressed during development, and the other is expressed when damage is done to an otherwise healthy neural speech system.
As a practical matter, the shift away from using the term neurogenic stuttering would require pointing out to people in the field that no, developmental stutter is not 'learned.' It has an organic, neurological basis, just like acquired stuttering. This is another effort on my part to stick a fork in the effort to save learning theory and sneak it past the door. Stuttering is not learned. Whether it is always an inherited condition or not is not proven, but I am confident that it is organic, and distinction not made often enough. There are those in this field who give lip service to acknowledging the evidence for the organic basis of stuttering, and then sneak behaviorist learning theory in the back door. The less places they have to hide, the better.
Take-home message: Acquired stutter, good, neurogenic stutter, bad.