This is the kind of overview people rarely get in one place. The way you separate motor, non-motor, prodromal, and cognitive features makes it much easier to understand why Parkinson’s so often goes unrecognized early and why patients feel dismissed before diagnosis. I also value how clearly you explain the limits of current testing and why diagnosis still depends on careful clinical reasoning rather than a single scan or lab. That context matters for patients who feel frustrated by uncertainty. The emphasis on prognosis and management feels grounding rather than alarmist. Framing Parkinson’s as progressive but highly variable, with meaningful quality of life possible through treatment, exercise, and adjustment, gives people something realistic to hold onto without false reassurance.