The World Health Organization (WHO) defines Acquired Brain Injury as an injury to the brain which is not hereditary, congenital or degenerative.
Some of the causes of brain injury include a blow to the head, whiplash injuries, seizure disorders, tumors or anoxic/hypoxic events (cardiopulmonary arrest, carbon monoxide poisoning, airway obstruction) infectious diseases and toxic exposure (substance abuse).
(BCBIA Headline, Vol 13, # 2, 1997)