Hysteria (noun)

1. A psychological disorder characterized by emotional excitability and sometimes by hallucinations and convulsions.
2. Exaggerated or uncontrollable emotion or excitement, as that provoked by a mob.
3. An uncontrollable outburst of emotion or fear, often characterized by irrationality, laughter, weeping, etc.

Origin:

From greek hystera, uterus + -ia.

Examples:

1. Her doctor diagnosed her with hysteria, which was a common diagnosis for women at the time.
2. The crowd's hysteria grew as the concert began and the band took the stage.
3. The stock market crash caused widespread hysteria among investors.
4. The child's hysteria made it difficult for the parents to calm him down.
5. The announcement of the celebrity's death caused a media hysteria.