What is it called when you bruise your brain or hit your head?

When you bruise your brain or hit your head, it's often referred to as a concussion. A concussion is a type of traumatic brain injury (TBI) that occurs when the brain is jolted or shaken inside the skull, leading to temporary disruption of normal brain function. Symptoms can include headache, confusion, dizziness, and memory issues. It's important to seek medical attention if a concussion is suspected.