FND

Trial By Error: Brain Publishes Letter About Flawed Study from NYU on ‘Psychogenic POTS’

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By David Tuller, DrPH When I have previously written about functional neurological disorder, or FND, I have gotten flack from FND patients. I understand from these exchanges that some have taken what I have written as criticizing patients with these diagnoses or dismissing their suffering. That is certainly not my intention. I know these conditions …

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Trial By Error: A Letter About the Inflated Prevalence Rate of Functional Neurological Disorder

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By David Tuller, DrPH I have recently written two posts (here and here) about how experts in functional neurological disorder (FND) have a tendency to assert prevalence rates that ignore their own diagnostic criteria. Today I sent a letter to the corresponding author of yet another paper that has similarly engaged in this problematic strategy. …

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Trial By Error: An FND Patient’s View–and More on Those Inflated Prevalence Rates

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By David Tuller, DrPH In a post last week, I noted that experts in FND have a tendency to assert prevalence rates that ignore their own diagnostic criteria. Before offering further thoughts on that score, I want to make one point very explicit: I am in no way questioning whether people with the diagnosis have …

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Trial By Error: Does Functional Neurology Disorder Account for a Third of Outpatient Neurology Consults?

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By David Tuller, DrPH Functional neurological disorder, or FND, is the new-ish name for the hoary Freudian construct known as conversion disorder. For decades, psychiatrists informed patients that they were “converting” their emotional distress and anxieties into physical symptoms like tremors, seizures, sensory and cognitive deficits, a halting gait, or other physical dysfunctions. The impossibility …

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Trial By Error: My Letter to Author of CODES Commentary

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By David Tuller, DrPH Earlier today, I sent the following letter to Dr David Perez, a neurologist and psychiatrist at Massachusetts General Hospital in Boston. Dr Perez, an expert on functional neurological disorders, wrote a commentary for Lancet Psychiatry that accompanied the publication of the results for CODES, a major study of cognitive behavior therapy …

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Trial By Error: CODES Trial Commentary Promotes ‘Eminence-Based Medicine’

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By David Tuller, DrPH By all accounts, the recently published CODES trial was the most authoritative study to date of whether cognitive behavior therapy (CBT) was an effective treatment for so-called dissociative seizures–a point confirmed in a commentary accompanying the paper in Lancet Psychiatry. Unfortunately, the CODES investigators and the commentary author seem to interpret …

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