Much like a concussion, a brain contusion (bruise) is a form of traumatic brain injury (TBI) that often results from a fall or blow to the head. A contusion is a localized injury that ranges from relatively minor to life threatening. Much like a skin bruise, it involves bleeding under the skin (subdural hematomas) and can result in a number of symptoms, including changes in personality or intelligence, memory challenges, localized numbness, and difficulty speaking or moving. Subdural hematomas can have deadly consequences and require immediate medical attention.