David TullerMy Exchange with an FND Physical Therapy Specialist
By David Tuller, DrPH When I write about functional neurological disorder (FND) or functional neurological symptoms, I sometimes get feedback from Zachary Grin, a physical therapist in New York. As an FND specialist, he disagrees with pretty much everything I write about the topic. At first, I tried to engage with Zachary in a good-natured manner. I had some sympathy for him because he’s a young gay guy—well, much younger than me, at any rate—and had publicly expressed having had some difficulty with his family over the issue. But that period was short-lived. I blocked him on X quite a while ago when he accused me of “lying” about the PACE trial. Specifically, he accused me of lying when I pointed out that the authors had lowered their outcome thresholds so dramatically that trial participants could be simultaneously “recovered” at baseline on two key self-reported measures—fatigue and physical function. Instead, he parroted the PACE authors’ response to this criticism—that no one was “recovered” at baseline because there were four separate recovery variables, and participants had to meet the designated thresholds for all four of them. This was a bogus response that avoided the facts. I have never claimed that anyone was “recovered” fully at baseline by the PACE definition of the term. What I have pointed out—accurately—is that some people met the “recovery” thresholds at baseline for two of the four “recovery” metrics. Even after I explained Zachary’s error, he continued to insist that he was right and I was “lying.” That was the last straw for me. He was only the second person I have ever blocked on the platform—and I haven’t blocked anyone since. In general, life is too short to pay attention to Zachary. But sometimes he forces himself on my attention by commenting on a post—as …https://trialbyerror.org/2026/05/27/my-exchange-with-an-fnd-physical-therapy-specialist/
Rob Rossi 🤖
Amanecer Querétaro
Underground Bookshelf
Bill Auchter