functional neurological disorder

Trial By Error: Study Finds Signs of “Functional Limb Weakness” in Patients Not Reporting Actual Limb Weakness

By David Tuller, DrPH *NOTE: Kim, an FND patient and advocate, has left an extensive set of criticisms in the comments. I urge those interested in this debate to read them. A recently published study about functional neurological disorder (FND) has reported some perplexing data. Of almost 300 patients diagnosed with Long Covid, 100 were …

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Trial By Error: Null Results in Physiotherapy Trial for Functional Motor Disorder

By David Tuller, DrPH *This is a crowdfunding month at University of California, Berkeley. If you appreciate my work and would like to make a donation (tax-deductible to US taxpayers) to the university in support of my position, here’s the link: https://crowdfund.berkeley.edu/project/46120 It must be tough for investigators when a major study seeking to assess the …

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Trial By Error: Leading FND Site Confirms Criticisms on Prevalence Outlined in Our Letter to Neurology Journal

By David Tuller, DrPH In two recent posts, here and here, I wrote about our letter on inflated prevalence claims for functional neurological disorder (FND) and about the response from the authors of the study we criticized. The 2021 article in NeuroImage: Clinical, “Neuroimaging in functional neurological disorder: state of the field and research agenda,” asserted …

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Trial By Error: Update on Our Letter Concerning the Prevalence of Functional Neurological Disorder

By David Tuller, DrPH In August, I submitted a letter to NeuroImage: Clinical concerning inflated rates of prevalence of functional neurological disorder, on behalf of myself and nine colleagues. After the letter went through peer review and a round of revisions, I was informed in early November that it had been accepted, as I noted …

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Trial By Error: Letter on Inflated FND Prevalence Rates Accepted for Publication

By David Tuller, DrPH As I have regularly noted, patients with diagnoses of functional neurological disorder (FND) experience tremendous suffering. A patient who goes by the moniker @FnDPortal has written a compelling and sometimes harrowing essay, Cadenza for Fractured Consciousness: A Personal History of the World’s Most Misunderstood Illness, that is well worth a read in …

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Trial By Error: Letter to Journal about Inflated Claims of FND Prevalence

By David Tuller, DrPH I have spent some time trying to correct the record on the reported prevalence of functional neurological disorder (FND). As I have documented, leaders of the FND field have spent the last decade misrepresenting the findings of a seminal 2010 study, Stone et al, to claim that this diagnosis is the …

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