What are the elements that need to be proven in a legal case involving intentional infliction of emotional distress?

In a legal case involving intentional infliction of emotional distress, the elements that need to be proven typically include:

1. The defendant's intentional or reckless conduct
2. The extreme and outrageous nature of the defendant's behavior
3. The causation of severe emotional distress to the plaintiff
4. The plaintiff's suffering of severe emotional distress as a result of the defendant's conduct.