The break of the temporal bone causes bleeding from the middle meningeal artery, hence<unk>  bleeding is often rapid as arteries are high-pressure flow. In 10% of cases, however, it comes from veins and can progress more slowly. A venous<unk>  may be acute (occurring within a day of the injury and appearing as a swirling mass of blood without a clot), subacute (occurring in 2–4 days and appearing solid), or chronic (occurring in 7–20 days and appearing mixed or lucent). In adults, the temporal region accounts for 75% of cases. In children, however, they occur with similar frequency in the occipital, frontal, and posterior fossa regions.<unk>  bleeds from arteries can grow until they reach their peak size 6–8 hours post-injury, spilling 25–75 cubic centimeters of blood into the intracranial space. As the<unk>  expands, it strips the dura from the inside of the skull, causing an intense headache. It also increases intracranial pressure, causing the brain to shift, lose blood supply, be crushed against the skull, or herniate. Larger<unk> s cause more damage.<unk>  bleeds can quickly compress the brainstem, causing unconsciousness, abnormal posturing, and abnormal pupil responses to light.
Epidural hematoma
Subarachnoid hemorrhage
Subdural empyema
Traumatic brain injury
Brain herniation
Brain abscess
Subdural hematoma
Transient ischemic attack