:''For other meanings, see
Brain damage (disambiguation)''
'Brain damage' or 'brain injury' is the destruction or degeneration of
brain cells.
Brain damage may occur due to a wide range of conditions,
illnesses,
injuries, and as a result of
iatrogenesis. Possible causes of widespread (''diffuse'') brain damage include prolonged
hypoxia (shortage of
oxygen),
poisoning by
teratogens (including
alcohol),
infection, and
neurological illness.
Chemotherapy can cause brain damage to the neural
stem cells and
oligodendrocyte cells that produce
myelin. Common causes of focal or localized brain damage are physical
trauma (
traumatic brain injury),
stroke,
aneurysm, or neurological illness.
The extent and effect of brain injury is often assessed by the use of
neurological examination,
neuroimaging, and
neuropsychological assessment.
Brain injury does not necessarily result in long-term impairment or
disability, although the location and extent of damage both have a significant effect on the likely outcome. In serious cases of brain injury, the result can be permanent
disability, including
neurocognitive deficits,
delusions (often specifically
monothematic delusions), speech or movement problems, and
mental handicap. There may also be personality changes. Severe brain damage may result in
persistent vegetative state,
coma, or
death.
Various professions may be involved in the medical care and
rehabilitation of someone who suffers impairment after brain damage.
Neurologists,
neurosurgeons, and
physiatrists are
physicians who specialise in treating brain injury.
Neuropsychologists (especially
clinical neuropsychologists) are
psychologists who specialise in understanding the effects of brain injury and may be involved in assessing the extent of brain damage or creating
rehabilitation programmes.
Occupational therapists may be involved in running rehabilitation programs to help restore lost function or help re-learn essential skills.
It is a common misconception that brain damage sustained during childhood has a better chance of successful recovery than similar injury acquired in adult life. It is contested that in recent studies, severe brain damage inflicted upon children can be alleviated by the interaction of nicotinamide repropagation in nerve cells. In fact, the consequences of childhood injury may simply be more difficult to detect in the short term. This is because different
cortical areas mature at different stages, with some major cell populations and their corresponding cognitive faculties remaining unrefined until early adulthood. In the case of a child with frontal brain injury, for example, the impact of the damage may be undetectable until that child fails to develop normal executive functions in his or her late teens and early twenties.
The effects of impairment or
disability resulting from brain injury may be treated by a number of methods, including
medication,
psychotherapy,
neuropsychological rehabilitation,
snoezelen,
surgery, or physical implants such as
deep brain stimulation.
See also
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Cerebral Palsy
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Epilepsy
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Fetal alcohol syndrome
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Head injury
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Neurocognitive deficit
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Neurology
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Rehabilitation (neuropsychology)
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Traumatic brain injury
References
External links
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Head and Brain Injuries from MedlinePlus
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Dr.Diane.com Information on brain injury and related rehabilitation services.
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Fact sheets on brain damage, its effects, and strategies for survivors and their families
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Brain Damage Research from ScienceDaily
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TBI Resource Guide Central source of information, services and products relating to brain injury, brain injury recovery, and post-acute rehabilitation.
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Recovery from Acquired Brain Injury from the Psychology Wiki