A hematoma is a swelling of collected blood that has leaked outside of a blood vessel, artery, vein or capillary due to damage. When it comes to brain injury hematomas, they are generally categorized as epidural (also known as extradural, in which the hematoma occurs between the membrane known as the dura mater and the skull) or subdural (also known as acute, in which the hematoma occurs between the brain and the dura mater) .Brain hematomas can be life-threatening, and they are a relatively common byproduct of high-impact motor vehicle collisions and falls. Even when victims survive, they face a long road to recovery, and many will have to live with permanent impairments. If you or a family member sustained a brain injury due to the negligence of another, please contact the Kiley Law Group today for a free consultation.