Why Autonomic Dysfunction Is Commonly Assumed to Be Neurodegenerative: A Bias-Based and Evidence-Informed Analysis
Abstract
Bruce H. Knox
Autonomic dysfunction is frequently interpreted within a neurodegenerative framework at the point of clinical recognition, particularly in cases of severe or multi-system involvement. This assumption persists despite well-established evidence that dysautonomia arises from a broad spectrum of reversible and non-degenerative causes, including immune-mediated, infectious, metabolic, and iatrogenic factors. This paper examines the structural, cognitive, and clinical drivers underlying the tendency to default toward neurodegenerative diagnoses such as pure autonomic failure and multiple system atrophy. Using a longitudinal case trajectory involving severe autonomic collapse followed by recovery and reclassification as secondary dysautonomia, this paper demonstrates that the neurodegenerative assumption is often a product of diagnostic heuristics, training bias, and limitations in current testing modalities. The findings highlight the need for a paradigm shift toward probabilistic, time-dependent diagnosis and emphasise the importance of maintaining diagnostic openness in autonomic medicine.
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