In sociology and psychology, mass hysteria is a phenomenon that transmits collective illusions of threats, whether real or imaginary, through a population and society as a result of rumors and fear.
[1][2] In medicine, the term is used to describe the spontaneous manifestation—or production of chemicals in the body—of the same or similar hysterical physical symptoms by more than one person.
[3][4] A common type of mass hysteria occurs when a group of people believes that they have a similar disease or ailment,[5] sometimes referred to as mass sociogenic illness or epidemic hysteria.
[6] California drought manipulation