In the expression “to open Pandora’s box,” what does the phrase usually describe?

“To open Pandora’s box” usually describes starting unforeseen troubles or consequences.

The expression comes from the myth in which Pandora opens a sealed container and releases evils into the human world. In modern English, the phrase is used figuratively when an action, decision, or investigation creates a chain of difficult problems that cannot easily be reversed.

The expression is not normally limited to Greek mythology. It appears in journalism, politics, law, technology, and everyday conversation. For example, a policy change may be called a Pandora’s box when it produces disputes or consequences that its creators did not anticipate.

The phrase is often associated with curiosity, but its central idea is broader: an apparently simple act can unleash many complications. The common wording also preserves the later “box” version, even though Hesiod’s original container was a pithos, or storage jar.