Hysteria is when someone has a very strong emotion that is unmanageable. Often, this means a very strong sense of fear. When someone has hysteria, it is called "hysterics". Hysteria could be caused by traumatic events in a person's life.
Today, many psychiatrists and other doctors do not use the word "hysteria" for a patient. They use other words that have the same meaning. Some of the words they may use are "psychosomatic", "functional", "nonorganic", "psychogenic", or "medically unexplained".
One of the conditions of hysteria may be Histrionic personality disorder.