Recapitulation:
Did you take a look at Wikipedia's page List of mass hysteria cases? I mean, it would be the obvious place to go for somebody who was actually trying to find "previous episodes of MPI that follow that kind of pattern" and not just pretending. Or maybe you did go there, but never bothered to read beyond the Middle Ages.
If you take a look at 1950−2000, you will not only find the "Pokemon panic — incident in which thousands of Japanese children seemingly suffered seizures while watching "Dennō Senshi Porygon", an episode of Pokémon," but also "Malaysia (1970s–1980s) — Mass hysteria in Malaysia affected school-age girls and young women working in factories," "Belgium (June 1999) — Coca-Cola withdrew 30 million units of its soft-drink product from sale after more than a hundred people in Belgium and northern France complained of cramps, nausea and other problems after consuming the soft drinks," and the "Day-care sex-abuse hysteria — a moral panic that occurred primarily in the 1980s and early 1990s featuring charges against day-care providers of several forms of child abuse, including Satanic ritual abuse."
But let us move on to 2000-present:
And the list doesn't even mention my absolute favorite, koro!
Unlike xjx388 and Checkmite, I read books about mass psychogenic illness and mass hysteria, which is why the excuse that they just can't find anything annoys the hell out of me.
But I cannot find any previous episodes of MPI that follow that kind of pattern. They happen in places like schools and offices, not multiple locations throughout the world.
Did you take a look at Wikipedia's page List of mass hysteria cases? I mean, it would be the obvious place to go for somebody who was actually trying to find "previous episodes of MPI that follow that kind of pattern" and not just pretending. Or maybe you did go there, but never bothered to read beyond the Middle Ages.
If you take a look at 1950−2000, you will not only find the "Pokemon panic — incident in which thousands of Japanese children seemingly suffered seizures while watching "Dennō Senshi Porygon", an episode of Pokémon," but also "Malaysia (1970s–1980s) — Mass hysteria in Malaysia affected school-age girls and young women working in factories," "Belgium (June 1999) — Coca-Cola withdrew 30 million units of its soft-drink product from sale after more than a hundred people in Belgium and northern France complained of cramps, nausea and other problems after consuming the soft drinks," and the "Day-care sex-abuse hysteria — a moral panic that occurred primarily in the 1980s and early 1990s featuring charges against day-care providers of several forms of child abuse, including Satanic ritual abuse."
This one was obviously mass hysteria and not mass psychogenic illness, but it is obvious that the media helped spread it, that it wasn't very sudden and anything but localized:Day-care sex-abuse hysteria was a moral panic that occurred primarily during the 1980s and early 1990s, and featured charges against day-care providers accused of committing several forms of child abuse, including Satanic ritual abuse. The collective cases are often colloquially called the “Satanic Panic.” A prominent case in Kern County, California, United States, first publicized the issue of day-care sexual abuse, and the issue figured prominently in news coverage for almost a decade. The Kern County case was followed by cases elsewhere in the United States, as well as Canada, New Zealand, Brazil, and various European countries.
Day-care sex-abuse hysteria (Wikipedia)
Significant cases
3.1 McMartin Preschool
3.2 Country Walk
3.3 Fells Acres Day Care Center
3.4 Bernard Baran
3.5 The Bronx Five
3.6 Wee Care Nursery School
3.7 Glendale Montessori
3.8 Little Rascals
3.9 Dale Akiki
3.10 Oak Hill satanic ritual abuse trial
3.11 Wenatchee child abuse prosecutions
3.12 Christchurch Civic Crèche
3.13 Martensville satanic sex scandal
But let us move on to 2000-present:
This one was limited in location, and I include it only because at least one of the Danish HPV-vaccine girls also had difficulty walking and was partially paralyzed. It was extremely effective on TV, although to me it didn't look like any actual disease I have ever heard of but more like something of a religious nature. However, cases like this aren't usually brought to my attention, so I can't really say what real cases are supposed to look like. By the way, I seem to remember hearing that this particular girl got over it. I can understand if she doesn't want to go on TV again and tell the world about it."Mexico City (2006–2007) — Between October 2006 and June 2007, near Chalco, a working-class suburb of Mexico City, mass hysteria resulted in an outbreak of unusual symptoms suffered by more than 500 adolescent female students at Children's Village School (Villa de las Ninas), a Catholic boarding-school. The afflicted students had difficulty walking and were feverish and nauseated, some becoming partially paralyzed."
Afghanistan (2009–) — Starting around 2009, a spate of apparent poisonings at girls' schools across Afghanistan began to be reported, with symptoms including dizziness, fainting, and vomiting.
Brunei (2010) — In April and May 2010, incidents of mass hysteria occurred at two all-girls secondary schools in Brunei. The most recent notable event happened on the 24 April 2014 in a public secondary school.
Le Roy, New York (2011–12) — After 12 high school girls developed Tourette-like symptoms in 2011, their school was tested for toxins, and all other factors for their symptoms were ruled out. The case, and some of the girls and their parents, gained national media attention. In January 2012, several more students and a 36-year-old adult female came forward with similar symptoms. They were all diagnosed with conversion disorder.
Sri Lanka (2012) — From November 15–20, 2012, incidents of mass hysteria occurred at 15 schools in Sri Lanka.
Recurrent epidemic of mass hysteria in Nepal (2016–2018)
And the list doesn't even mention my absolute favorite, koro!
Koro is a culture bound delusional disorder in which an individual has an overpowering belief that their sex organs are retracting and will disappear, despite the lack of any true longstanding changes to the genitals. Koro is also known as shrinking penis, and it is listed in the Diagnostic and Statistical Manual of Mental Disorders.
The syndrome occurs worldwide, and mass hysteria of genital-shrinkage anxiety has a history in Africa, Asia and Europe. In the United States and Europe, the syndrome is commonly known as genital retraction syndrome.
The condition can be diagnosed through psychological assessment along with physical examination to rule out genuine disorders of the genitalia that could be causing true retraction.
Koro (medicine) (Wikipedia)
Unlike xjx388 and Checkmite, I read books about mass psychogenic illness and mass hysteria, which is why the excuse that they just can't find anything annoys the hell out of me.
