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Varicose veins Introduction |
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Varicose veins
are elongated, tortuous, dilated
superficial veins. They are
usually present in the legs. Varicose
veins result from incompetent
valves that allow blood flow away
from the heart. Increased pressure
in the superficial veins also plays
a role in the development of
this condition. Over time, damage
from increased pressure, incompetent
valves, and chemical mediators (e.g. free radicals and enzymes)
decrease the integrity of the vessel
wall and dilation occurs. Once one
area of the vein is compromised, the
damage will continue along the
course of the vein. [1]
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Varicose veins
affects both men and women, though women are
affected up to three times as often
as men. There is no known
predisposition to any one particular race, though there is
an increased prevalence in Western
industrialized countries compared to
developing countries. The peak
incidence of occurrence is between
the ages of 30 and 40. [2]
Family history,
however, is a
risk factor for the development of
varicose veins. Pregnancy is also a
risk factor for the development of
varicose veins because of the
hormonal changes and increased
pressure on the pelvic veins. Prolonged standing will aggravate
varicose veins, but standing alone, is not
considered a risk
factor for development. [3] Prior episodes of deep vein
thrombosis can increase the chance
of developing varicose veins. Some
authors suggest that external trauma
can also increase risk of developing
varicose veins. [4]
Varicose veins Statistics
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1 in 5 adults or
15-25% in the US have varicose
veins.
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It is estimated that
50% of the US population over 50
years old has varicose veins.
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The prevalence of varicose veins is greater in women
(50-55%) compared to men (40-45%).
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Women are three times
more likely to have varicose veins
than men.
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It is estimated that
41% of all women 50 years old or
greater have varicose veins.
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Only 20-25% of women
and 10-15% of men have visible
varicosities.
Varicose veins may be
asymptomatic. Individuals may
complain of heaviness and fatigue in
the lower extremity. Edema may
also be
present. One of the most common
complaints in newly formed
varicosities is a dull aching pain, most likely due to the initial
damage to the vessel. The skin
overlying the varicose vein may be
hot or warm to touch and it may
itch. These symptoms do
not correlate
to the extent of damage or size of
the varicosity. Often times, the larger
dilated veins will present with only
cosmetic complaints. [5]
The heaviness or
aching in the leg will be relieved
by walking and support hose, and
may be exacerbated by standing for long
periods of time. Individuals will
often find a relief from symptoms by
elevating legs. Varicose veins
complaints are worse at night, in
the summer months, and during
menstruation due to increased
edema. [6]
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Varicose Veins |
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