A head injury is any injury that results in trauma to the skull or brain. The terms traumatic brain injury and head injury are often used interchangeably in the medical literature. Because head injuries cover such a broad scope of injuries, there are many causes—including accidents, falls, physical assault, or traffic accidents—that can cause head injuries.
Brain injury (BI) is the destruction or degeneration of brain cells. Brain injuries occur due to a wide range of internal and external factors. In general, brain damage refers to significant, undiscriminating trauma-induced damage.
A concussion, also known as a mild traumatic brain injury (mTBI), is a head injury that temporarily affects brain functioning. Symptoms may include loss of consciousness; memory loss; headaches; difficulty with thinking, concentration, or balance; nausea; blurred vision; dizziness; sleep disturbances, and mood changes. Any of these symptoms may begin immediately, or appear days after the injury. Concussion should be suspected if a person indirectly or directly hits their head and experiences any of the symptoms of concussion. Symptoms of a concussion may be delayed by 1–2 days after the accident. It is not unusual for symptoms to last 2 weeks in adults and 4 weeks in children. Fewer than 10% of sports-related concussions among children are associated with loss of consciousness.
A traumatic brain injury (TBI), also known as an intracranial injury, is an injury to the brain caused by an external force. TBI can be classified based on severity ranging from mild traumatic brain injury (mTBI/concussion) to severe traumatic brain injury. TBI can also be characterized based on mechanism or other features. Head injury is a broader category that may involve damage to other structures such as the scalp and skull. TBI can result in physical, cognitive, social, emotional and behavioral symptoms, and outcomes can range from complete recovery to permanent disability or death.
Closed-head injury is a type of traumatic brain injury in which the skull and dura mater remain intact. Closed-head injuries are the leading cause of death in children under 4 years old and the most common cause of physical disability and cognitive impairment in young people. Overall, closed-head injuries and other forms of mild traumatic brain injury account for about 75% of the estimated 1.7 million brain injuries that occur annually in the United States. Brain injuries such as closed-head injuries may result in lifelong physical, cognitive, or psychological impairment and, thus, are of utmost concern with regards to public health.
Post-concussion syndrome (PCS), also known as persisting symptoms after concussion, is a set of symptoms that may continue for weeks, months, or years after a concussion. PCS is medically classified as a mild traumatic brain injury (TBI). About 35% of people with concussion experience persistent or prolonged symptoms 3 to 6 months after injury. Prolonged concussion is defined as having concussion symptoms for over four weeks following the first accident in youth and for weeks or months in adults.
Chronic traumatic encephalopathy (CTE) is a neurodegenerative disease linked to repeated trauma to the head. The encephalopathy symptoms can include behavioral problems, mood problems, and problems with thinking. The disease often gets worse over time and can result in dementia.
Craig Hospital is a neurorehabilitation and research hospital in Englewood, Colorado specializing in spinal cord injury (SCI) and traumatic brain injury (TBI) rehabilitation and research. Craig is a 93-bed, private, not-for-profit, free-standing long-term acute care and rehabilitation hospital that provides a comprehensive system of inpatient and outpatient medical care, rehabilitation, neurosurgical rehabilitative care, and long-term follow-up services. Half of Craig's patients come from outside of Colorado each year, and in the past four years Craig has treated patients from all 50 states and several foreign countries. At any given time, the staff at Craig treats approximately 55 inpatients with spinal cord injuries, 30 with traumatic brain injuries, and 50-60 outpatients. Craig provides housing for out-of-state families and outpatients, including the first 30 days free for families of new inpatients.
Post-traumatic amnesia (PTA) is a state of confusion that occurs immediately following a traumatic brain injury (TBI) in which the injured person is disoriented and unable to remember events that occur after the injury. The person may be unable to state their name, where they are, and what time it is. When continuous memory returns, PTA is considered to have resolved. While PTA lasts, new events cannot be stored in the memory. About a third of patients with mild head injury are reported to have "islands of memory", in which the patient can recall only some events. During PTA, the patient's consciousness is "clouded". Because PTA involves confusion in addition to the memory loss typical of amnesia, the term "post-traumatic confusional state" has been proposed as an alternative.
Traumatic brain injury can cause a variety of complications, health effects that are not TBI themselves but that result from it. The risk of complications increases with the severity of the trauma; however even mild traumatic brain injury can result in disabilities that interfere with social interactions, employment, and everyday living. TBI can cause a variety of problems including physical, cognitive, emotional, and behavioral complications.
Steven R. Flanagan is a nationally renowned expert in the field of traumatic brain injury (TBI) and is professor and chairman of the Department of Rehabilitation Medicine at the New York University School of Medicine, and the medical director of the Rusk Institute of Rehabilitation Medicine at the NYU Langone Medical Center.
Lee Carlson is an American writer best known for his memoir, Passage to Nirvana, about surviving traumatic brain injury. Prior to publishing Passage to Nirvana he was a magazine and newspaper journalist specializing in writing about outdoor adventure sports such as skiing and scuba diving. He was senior travel editor for Skiing magazine, and has worked for media outlets such as Outside magazine, Newsday, NBC Sports, ESPN and many others.
Passage to Nirvana, A Survivor's Zen Voyage: Reflections on Loss, Discovery, Healing & Hope is a memoir by Lee Carlson, written over a several-year period from 2005 to 2010, primarily on board a 60-foot sailboat named Nirvana that he shared with his fiancée Meg. It was his first book, although he had made his living as a writer for most of his adult life, working first as a journalist, magazine editor and freelance writer, and then moving into advertising and marketing copywriting. The book centers around Carlson's traumatic brain injury and subsequent recovery, as well as his mother's death from a traumatic brain injury. However the book is much more far-ranging, delving into such subjects as Zen Buddhism, sailing, divorce, children, family and even poetry. Ultimately it is a book about finding peace and happiness after a traumatic life event, a book about finding the joy in living.
The Wechsler Test of Adult Reading (WTAR) is a neuropsychological assessment tool used to provide a measure of premorbid intelligence, the degree of Intellectual function prior to the onset of illness or disease.
George Anthony Visger is a former professional American football player who played defensive line for the San Francisco 49ers.
The Disability Rating Scale (DRS) was developed as a way to track a traumatic brain injury (TBI) patient from 'Coma to Community'. The scale was used to rate the effects of injury and decide how long recovery might take. The rating gives insight into the cognitive impairment of the individual with the TBI.
The Traumatic Brain Injury Reauthorization Act of 2013 is a bill that would reauthorize appropriations for Centers for Disease Control and Prevention (CDC) projects to reduce the incidence of traumatic brain injury and projects related to track and monitor traumatic brain injuries.
The Westmead Post-traumatic Amnesia Scale (WPTAS) is a brief bedside standardised test that measures length of post-traumatic amnesia (PTA) in people with traumatic brain injury. It consists of twelve questions that assess orientation to person, place and time, and ability to consistently retain new information from one day to another. It is administered once a day, each and every day, until the patient achieves a perfect score across three consecutive days, after which the individual is deemed to have emerged from post-traumatic amnesia. PTA may be deemed to be over on the first day of a recall of 12 for those who have been in PTA for greater than four weeks. The WPTAS is the most common post-traumatic amnesia scale used in Australia and New Zealand.
Jennie Louise Ponsford is an Australian neuroscience researcher at Monash University, Victoria who works on Traumatic Brain Injury (TBI). Ponsford is a clinical neuropsychologist, whose work is focused on developing a deeper understanding of the negative consequences of TBI, particularly those related to fatigue, sleep disturbance, attentional, memory and executive problems, psychiatric and behavioural disturbances and sexuality, and the development of rehabilitation interventions to improve long term recovery and quality of life in individuals with TBI.
Sleep disorder is a common repercussion of traumatic brain injury (TBI). It occurs in 30%-70% of patients with TBI. TBI can be distinguished into two categories, primary and secondary damage. Primary damage includes injuries of white matter, focal contusion, cerebral edema and hematomas, mostly occurring at the moment of the trauma. Secondary damage involves the damage of neurotransmitter release, inflammatory responses, mitochondrial dysfunctions and gene activation, occurring minutes to days following the trauma. Patients with sleeping disorders following TBI specifically develop insomnia, sleep apnea, narcolepsy, periodic limb movement disorder and hypersomnia. Furthermore, circadian sleep-wake disorders can occur after TBI.
