Thescaryfact ™ on Instagram: "Encephalitis lethargica remains one of the most chilling medical mysteries in history. Between 1915 and 1926, it swept across the world, infecting more than a million people. It began harmlessly — fever, sore throat, fatigue — but then many victims suddenly slipped into a horrifying state: fully conscious yet unable to speak, move, blink, or react, as if locked inside their own bodies. Some stayed like this for months; others for decades. Doctors were completely baf