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Prevalence and Incidence of Basilar artery migraine

Basilar artery migraine Prevalence: Book Excerpts

Prevalence/Incidence of Basilar artery migraine: Online Medical Books

16 MEDICAL BOOKS ONLINE! Review excerpts from medical books online, free, without registration, for more information about the prevalence and/or incidence of Basilar artery migraine.

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.

» READ BOOK EXCERPT ONLINE »

Source: Professional Guide to Diseases (Eighth Edition), 2005

Premenstrual syndrome: Causes and incidence
(Professional Guide to Diseases (Eighth Edition))

The list of biological theories offered to explain the cause of PMS is impressive. It includes such conditions as a progesterone deficiency in the menstrual cycle’s luteal phase and vitamin deficiencies. Although there’s no evidence that PMS is hormonally mediated, failure to identify a specific disorder with a specific mechanism suggests that PMS represents a variety of manifestations triggered by normal physiologic hormonal changes. Researchers believe that 70% to 90% of women experience PMS at some time during their childbearing years, usually between ages 25 and 45.

» READ BOOK EXCERPT ONLINE »

Source: Professional Guide to Diseases (Eighth Edition), 2005

Premenstrual Syndrome (PMS): Premenstrual Syndrome - epidemiology
(The 5-Minute Pediatric Consult)

Premenstrual Syndrome - prevalence

  • 40–75% of women experience some PMS symptoms at some time
  • 15–30% of women report recurrent symptoms suggestive of PMS
  • 2–5% of women have symptoms that interfere with their usual activities (PMDD)
  • 14–88% of adolescent girls have moderate to severe PMS

» READ BOOK EXCERPT ONLINE »

Source: The 5-Minute Pediatric Consult, 2008

About prevalence and incidence statistics:

The term 'prevalence' of Basilar artery migraine usually refers to the estimated population of people who are managing Basilar artery migraine at any given time. The term 'incidence' of Basilar artery migraine refers to the annual diagnosis rate, or the number of new cases of Basilar artery migraine 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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