A strong blow to the head, or even shaking or rapid movement of the head, may damage blood vessels inside the brain or tear brain tissue. This can lead to bleeding (hemorrhage) or bruising (contusion) in the brain. When blood pools or collects in the brain, the clot is called a hematoma. You may hear terms such as epidural, subdural, intracerebral, and subarachnoid. These refer to the location of the hematoma inside your child's head.