A contusion is a type of injury without an open wound, distinguished from cuts or lacerations.

Not a Cut

Contusions often result in a visible change of skin color, usually purplish or bluish.

Visible Discoloration

The word is often used to describe damage from a direct blow or impact to the body.

When 'contusion' is used in neurology, it specifically refers to bruising of the brain tissue.

A cerebral contusion is caused by a head trauma and can be a serious condition, requiring medical attention.

Contusions in the brain are not visible externally and often require imaging tests to diagnose.