Mass hysteria

As defined by Abby McPhail, mass hysteria was "a shared madness". Oliver Morgenstern added that the term was used to describe events where "an idea [could] spread like a virus".

Morgenstern researched a number of events which he believed to be examples of mass hysteria. In North Carolina in 2002, a group of cheerleaders all suffered identical seizures with no obvious physiological cause. In Portugal in 2006, girls started experiencing symptoms of a fictional virus they’d seen in a teen soap.

The temporary disappearance of the Royal Hope Hospital in 2008 was attributed to being a case of mass hysteria, even by those who were inside the hospital, such as Oliver Morgenstern. (AUDIO: Hysteria) In reality, the disappearance of the hospital was caused by the Judoon transporting it to the Moon via a H₂O scoop. (TV: Smith and Jones)

Some claimed that the Bubble Shock! incident was the result of mass hysteria caused by a chemical imbalance in the brain. (TV: Invasion of the Bane)

The BBC News website claimed that the huge fireball over Cardiff caused mass hysteria. They used the headline "Cardiff Mass Hysteria". (TV: The New World)