Yes, absolutely. Some forms of brain injuries are not caused by penetrating or direct impacts. The two most severe TBIs, diffuse axonal and coup-contrecoup, occur when there is no head impact at all and the skull is never fractured. Victims of negligent accidents do not need to suffer any loss of consciousness to suffer a TBI either. The truth is, however, some victims do suffer a loss of consciousness and do not even realize it. Always ask your healthcare professional to run thorough tests if you suspect you may have suffered a brain injury, and always ask for the best brain injury lawyer to review your case for free.