Author name: David Tuller

Trial By Error: Todd Davenport on Post-Exertional Symptom Exacerbation in Long Covid and ME/CFS

By David Tuller, DrPH Todd Davenport is a professor of physical therapy at University of the Pacific in Stockton, California. He is also part of a research team from Workwell Foundation, an exercise physiology center in Ripon, California, that pioneered the use of 2-day cardiopulmonary exercise testing (CPET) to document the core ME and ME/CFS symptom …

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Trial By Error: A Letter to Journal Brain About Paper Claiming POTS Is a “Functional Psychogenic Disorder”

By David Tuller, DrPH I recently criticized a study from New York University’s neurology department. The investigators wildly over-interpreted their findings in order to argue that postural orthostatic tachycardia syndrome, or POTS, is a “functional psychogenic disorder.” This morning, I sent a letter to Brain, the journal that published the paper, on behalf of several …

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Trial By Error: Is POTS a “Functional Psychogenic Disorder”? Yes, According to NYU Research Team

By David Tuller, DrPH Research into conditions categorized as “medically unexplained symptoms” (MUS) or “functional” disorders seems rife with studies that eagerly interpret associations and correlations as causal relationships. Not surprisingly, these proposed causal relationships tend to flow in the direction required by the investigators’ hypotheses, not in the direction that would undermine their arguments.

Trial By Error: A Few Things I’ve Read (or Heard) Lately About ME/CFS and Long Covid

By David Tuller, DrPH Here are a few things I’ve recently read (or listened to). FreakonomicsMD podcast The Freakonomics brand is well-known in the US. I didn’t realize there was a Freakonomics, M.D. podcast until I listened to this recent half-hour episode. The podcast is hosted by Dr Bapu Jena, a physician and economist at …

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Trial By Error: Professor Chalder Reports CBT Does Not Work for Post-Stroke Fatigue, Calls for More Research

By David Tuller, DrPH Calling out a Trudie Chalder paper is way too easy. It’s also old hat for Virology Blog—going back to 2015 and my initial investigation into the now-discredited PACE trial, of which she was one of three lead investigators. She is a professor of “cognitive behavioural psychotherapy” at King’s College London, so …

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