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.