00:00A phantom attacker once made hundreds of people feel pain that wasn't real.
00:05London, 1788.
00:07A mysterious figure stalked the streets.
00:10People reported being stabbed, slashed, attacked.
00:13Panic spread fast.
00:15But here's the twist.
00:17Most victims were never touched.
00:19The injuries were real sensations.
00:21Completely imaginary causes.
00:24Historians call this the London Monster Panic.
00:27Mass hysteria turned fear into physical pain.
00:31This phenomenon has a name.
00:33Mass psychogenic illness.
00:36And it spreads exactly like a virus.
00:39Same mathematical patterns.
00:41Same network pathways.
00:43Fastest through tight social groups.
00:45It still happens today.
00:47Schools, factories.
00:48Dozens of people collapsing simultaneously.
00:52Identical symptoms.
00:54Zero physical cause.
00:57Fear alone can rewrite what your body feels.
01:01Your mind is that powerful.
01:04Follow for more mind-blowing facts every day.