Mass hysteria

Mass hysteria or mass psychological illness is a phenomenon where a large group of people share a common emotion. This emotion can be positive, such as people being euphoric at a rock concert, or it can be negative, like after a great person or statesman died.

The phrase "mass hysteria" was first used by the Quarteerly Christian Spectator in 1830, to describe an outbreak of cholera.[1]

References

  1. The Journal of Health Conducted by an Association of Physicians (1831) p. 180