5 Eerie Ways Entire Groups Went Insane Science Can't Explain

After spending an afternoon in the time-out corner, America finally realized that there was no child sacrifice epidemic in the United States, and that they were all just basically stressed out. Why we jumped straight to "the devil is eating our children!" instead of "man, I really need a drink" is anybody's guess.

It's called multiple chemical sensitivity (MCS), and sufferers report migraines, rashes, muscle pain, nausea, and fatigue if they come into contact with any kind of chemical substance. Sufferers from all over the world have flocked to the Arizona community due to its isolation and lack of both air pollution and humidity, and most live in specially designed houses that minimize chemical exposure and either use no electricity or keep electrical items segregated to one room. It's like being part-time Amish.

Life is pretty terrible for people afflicted with MCS, but according to scientists, it doesn't actually exist. They can't find any evidence that the condition is real at all, and not a single major health organization recognizes it as an actual disease. So what, is this just some kind of coordinated insurance scam? Probably not. As far as anyone can tell, what's really going on here is that sufferers have actually fallen victim to the "nocebo effect," the opposite of the placebo effect, which means that, if you convince yourself that something will make you feel sick, you might actually begin to feel sick. We've mentioned it before as the same reason many people around the world protest against wind farms.

In short, a bunch of people heard rumors about this disease known as MCS, and suddenly began to feel like the underside of balls, so their response was to move to the 21st century equivalent of a leper colony. In Arizona. Damn!

When Geisy Arruda rocked up to Bandeirantes University in a hot pink dress cut significantly above the knee, she was probably expecting a few sideways glances and approving nods. Instead, a gang of men began following her around, harassing her, and trying to shove cellphone cameras between her legs. When she shunned their advances ("then I got the perfect upskirt, and that's how your mother and I met!" said nobody, ever), the situation only got worse.

Arruda went to the bathroom to escape, where she was confronted by a group of women demanding that she put on some pants. Meanwhile, that same group of men tried to break in to the ladies' room to catch another glimpse at her gams. Now she found herself trapped between the Fashion Police and the Molestation Marauders.

As the day wore on, a full-on riot developed. Staff attempted to help by barricading Arruda inside a classroom, but the rioting students tried to break in through a window. The riot police finally arrived with a hearty supply of pepper spray and managed to clear a path so that Arruda, cloaked in a lab coat to hide the shame of her uncovered legs, could be escorted from the building.

The university expelled Arruda and publicly condemned her for inciting a riot by wearing a miniskirt. (Hang on ... we just need to double-check the year this happened in case our sources made a typo. OK, definitely 2009? Wow.)

The university then reversed its decision due to backlash from sane people, and Arruda was not only reinstated, but received a cash settlement and became a reality TV star, which is amongst the strangest career paths we've ever heard of.

In spring of 1954, people in Bellingham, Washington, started reporting a bizarre epidemic of vandalism -- tiny pits were appearing in windshields all over the city. As the news began to spread, so did the phenomenon. People in California, Illinois, Indiana, Kentucky, Michigan, Ohio, Oregon, Wisconsin, and even Canada began to report unexplainable windshield damage. This was now a continent-wide problem, and the government could no longer afford to ignore the flood of tens of thousands of reports. Police began to set up roadblocks and random searches to find the culprits, and at one point, the mayor of Seattle even asked President Eisenhower to step in.

When no vandals could be found, people began to search for weirder theories, like insect eggs hatching inside the glass, acid in the atmosphere, shifts in the Earth's magnetic field, byproducts from nuclear tests, or even cosmic rays. Maybe they gave tiny superpowers to adorable Hulks who pounded itty-bitty holes into glass -- who knows?

Eventually, a team of physicists, chemists, and meteorologists teamed up to solve the mystery. What the investigation finally concluded was that the pits were actually the result of completely normal wear-and-tear from kicking up road debris. They had been there all along. People just hadn't noticed them until they read about the pitting epidemic in the newspaper and went outside to check their own car.

It's a classic case of people simply not being aware of something until someone points it out, and then they can't help but notice it, just like you weren't really conscious of your own breathing until we pointed it out just now. Also, sorry about that.

Back in 2003, Mary Leitao was at her wit's end trying to figure out what was bothering her 2-year-old son, Drew. He had a rash that dermatologists couldn't explain, and he kept complaining about bugs under his skin. Worse, strange fibers kept appearing on his body. He was struck with ... phantom sweater syndrome!

Well, you come up with something better, because the doctors sure couldn't. When medical science met her with a collective shrug, Mary figured that she would take it to the Internet. She herself coined the term "Morgellons syndrome," based on a term she had found in an old medical journal. Soon, thousands of people around the world began to notice that they were afflicted with Morgellons. It starts with an itching sensation, and soon develops into strange fibers being excreted from your skin. Sufferers believe it's caused by everything from secret government aerosol programs to a byproduct of the government's weather machines.

Up to 12,000 families are suspected of suffering from Morgellons, so there has to be something real behind it right? Real doctors with credentials above and beyond, who "have used the Internet at least once," have been investigating Morgellons for years, and concluded that the fibers are probably just normal detritus you pick up every day from your clothing and carpet. That's right: 12,000 people all over the world are suffering from "being kinda dirty." Won't you donate today?

Jesus A. Rodriguez speaks English, Spanish, and even Spanglish. So if you know any of those languages, you can find him on Twitter and Facebook when he's not busy pitching articles or participating in the weekly Photoplasty contests here on Cracked.

It turns out people will lose their minds about pretty much anything. Like imaginary bugs or perfume. No shit, check out 5 Terrifying Killers (That Turned Out to be Mass Panics) and learn more. Or see why the news media is dumb and we're dumb for believing it in 18 Terrifying News Stories You Didn't Know Were Media Panics.

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