All statistics for Head injury
Prevalence/Incidence of Head injury: Online Medical Books
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for more information about the prevalence and/or incidence of Head injury.
Headache:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
Most chronic headaches result from tension (muscle contraction), which may be caused by emotional stress, fatigue, menstruation, or environmental stimuli (noise, crowds, or bright lights). Other possible causes include glaucoma; inflammation of the eyes or mucosa of the nasal or paranasal sinuses; diseases of the scalp, teeth, extracranial arteries, or external or middle ear; muscle spasms of the face, neck, or shoulders; and cervical arthritis. In addition, headaches may be caused by vasodilators (nitrates, alcohol, and histamine), systemic disease, hypoxia, hypertension, head trauma and tumor, intracranial bleeding, abscess, or aneurysm.
The cause of migraine headache is unknown, but it’s associated with constriction and dilation of intracranial and extracranial arteries. Certain biochemical abnormalities are thought to occur during a migraine attack. These include local leakage of a vasodilator polypeptide called neurokinin through the dilated arteries and a decrease in the plasma level of serotonin.
Headache pain may emanate from the pain-sensitive structures of the skin, scalp, muscles, arteries, and veins; cranial nerves V, VII, IX, and X; or cervical nerves 1, 2, and 3. Intracranial mechanisms of headaches include traction or displacement of arteries, venous sinuses, or venous tributaries and inflammation or direct pressure on the cranial nerves with afferent pain fibers.
Affecting up to 10% of Americans, headaches are more common in females and have a strong familial incidence.
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Source: Professional Guide to Diseases (Eighth Edition), 2005
Blunt chest injuries:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
Motor vehicle accidents cause two-thirds of major chest injuries in the United States. Other common causes include sports and blast injuries and cardiopulmonary resuscitation. About 50% of these injuries affect the chest wall; 80% of those with significant blunt chest trauma also have extrathoracic injuries.
Chest injuries account for 70% of all trauma-related deaths in the United States.
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Source: Professional Guide to Diseases (Eighth Edition), 2005
Blunt and penetrating abdominal injuries:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
Blunt (nonpenetrating) abdominal injuries usually result from automobile accidents, falls from heights, or sports injuries; penetrating abdominal injuries, from stab and gunshot wounds.
The most commonly injured organs associated with penetrating abdominal trauma are the small intestine (29%), liver (28%), and colon (23%). Penetrating abdominal trauma affects 35% of those admitted to urban trauma centers and 1% to 12% of those admitted to suburban and rural centers.
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Source: Professional Guide to Diseases (Eighth Edition), 2005
Rape trauma syndrome:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
Rape isn’t primarily about sex. It’s a violent crime linked to feelings of rage or hatred in the assailant. Some of the cultural, sociological, and psychological factors that contribute to rape are increased exposure to sex, permissiveness, cynicism about relationships, feelings of anger, and powerlessness amid social pressures. Many rapists have feelings of violence or hatred toward women or sexual problems, such as impotence or premature ejaculation. They may feel socially isolated and be unable to form warm, loving relationships. Some rapists may be psychopaths who need violence for physical pleasure, no matter how it affects their victims; others rape to satisfy a need for power. Some were abused as children.
In the United States, a rape is reported every 6 to 7 minutes. The incidence of reported rape is highest in large cities and continues to rise. However, many rapes — possibly even most — are never reported.
Known victims of rape range in age from 2 months to 97 years. The age group most affected is 10- to 19-year-olds; the average victim’s age is 13½". About one in seven reported rapes involves a prepubertal child; most of these cases involve manual, oral, or genital contact with the child’s genitals by a member of the child’s family. More than 50% of rapes occur in the home; about one-third of these involve a male intruder who forces his way into a home. In about half the cases, the victim has some casual acquaintance with the attacker. Most rapists are between ages 25 and 44 and have planned the attack. Alcohol is involved in one-third of cases.
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Source: Professional Guide to Diseases (Eighth Edition), 2005
Cold injuries:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
Localized cold injuries occur when ice crystals form in the tissues and expand extracellular spaces. With compression of the tissue cell, the cell membrane ruptures, interrupting enzymatic and metabolic activities. Increased capillary permeability accompanies histamine release, resulting in aggregation of red blood cells and microvascular occlusion. Hypothermia effects chemical changes that slow the functions of most major organ systems, such as decreased renal blood flow and decreased glomerular filtration. Frostbite results from prolonged exposure to dry temperatures far below freezing; hypothermia, from near drowning in cold water and prolonged exposure to cold temperatures.
The risk of serious cold injuries, especially hypothermia, is increased by youth, old age, lack of insulating body fat, wet or inadequate clothing, drug abuse, cardiac disease, smoking, fatigue, hunger and depletion of caloric reserves, and excessive alcohol intake (which draws blood into capillaries and away from body organs).
ELDER TIP The following risk factors put elderly people at increased risk for cold injuries: cardiovascular disease, alcohol abuse, malnutrition, diabetes, skin diseases, scarring from major burns, inadequate fluid intake, working outdoors, wearing inappropriate clothing, and living in poor environmental conditions. The use of anticholinergics, phenothiazines, diuretics, antihistamines, antidepressants, or beta-adrenergic blockers also increases the risk.
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Source: Professional Guide to Diseases (Eighth Edition), 2005
About prevalence and incidence statistics:
The term 'prevalence' of Head injury usually refers to the estimated population
of people who are managing Head injury at any given time.
The term 'incidence' of Head injury refers to the annual diagnosis rate,
or the number of new cases of Head injury diagnosed each year.
Hence, these two statistics types can differ:
a short-lived disease like flu can have high annual incidence but low prevalence,
but a life-long disease like diabetes has a low annual incidence but high prevalence.
For more information see about prevalence and incidence statistics.
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