FND

Trial By Error: Update on Efforts to Correct False Statements about FND Prevalence

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By David Tuller, DrPH I have continued writing my letter-writing effort to alert journals about papers on functional neurological disorder (FND) that have included false statements regarding the prevalence of the condition reported by a seminal study in the field the reported prevalence of the condition. (I was going to refer to this as a …

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Trial By Error: A Letter to Psychological Medicine about Inflated FND Rate Claims

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By David Tuller, DrPH The journal NeuroImage: Clinical, an Elsevier title, recently agreed to correct the false statement that a 2010 study found functional neurological disorder to be the second-most-common diagnosis at outpatient neurology clinics. To the journal’s credit, it responded positively within days of receiving a letter about the matter from a group of …

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Trial By Error: A Letter Requesting Corrections of Inflated Prevalence Rates in Nine More FND Papers

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By David Tuller, DrPH Several colleagues and I recently wrote to the journal NeuroImage: Clinical to request a correction in a 2021 article about functional neurological disorder (FND). The article included the false claim that a seminal 2010 study found that FND was the second-most-common diagnosis at outpatient neurology clinics. In fact, FND—called conversion disorder …

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Trial By Error: FND Experts Agree To Correct Inflated Prevalence Claim

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By David Tuller, DrPH For years, experts in functional neurological disorder (FND) have cited a seminal study in their field to claim that the diagnosis was the second-most-common presentation at outpatient neurology clinics, with a prevalence of 16%. This claim was, and is, categorically untrue. The Scottish Neurological Symptoms Study (SNSS), which yielded multiple papers …

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Trial By Error: A Letter Regarding Inflated Prevalence Rates for Functional Neurological Disorder

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By David Tuller, DrPH I have posted previously about how papers on functional neurological disorder (FND) have routinely mis-cited a seminal 2010 study in asserting that the diagnosis is the second-most-common presentation at neurology clinics, with a rate of 16%. In fact, the 2010 study found that only 5.5% had FND, the new name for …

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Trial By Error: Questions About the Prevalence of Functional Neurological Disorder and the Research on Hoover’s Sign for Functional Leg Weakness

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By David Tuller, DrPH(This is a long-ish post. Sorry! It covers two complicated issues. I want to thank an intrepid source for help with this.) I have great sympathy for patients diagnosed with functional neurological disorder (FND). Their symptoms can be seriously disabling and their plight has long been neglected and dismissed by the medical …

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