A hemorrhoid is a bulging, distended vein in the area around the anus, the opening through which stool passes. This happens when pressure in the abdomen increases, causing blood to back up inside blood vessels, making them bulge and stretch out of shape.
In most cases, the increase in abdominal pressure that triggers hemorrhoids is related to one or more of the following:
Repeated straining to have a bowel movement, especially in people who suffer from frequent constipation
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Source: HealthCentral Encyclopedia
Hemorrhoids (also known as "piles") are dilated or bulging veins of the rectum and anus, caused by increased pressure in the rectal veins. Fifty to... Read more »
Source: ADAM Encyclopedia
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Source: ADAM Encyclopedia
Rectal lump; Piles; Lump in the rectum SymptomsSymptoms of hemorrhoids include:Anal itching Anal ache or pain, especially while sitting Bright red... Read more »
Source: Harvard Decision Guide
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Source: ADAM Encyclopedia
Hemorrhoid surgery is the removal of swollen veins around the anus.See also: HemorrhoidsAlternative NamesHemorrhoidectomyDescriptionHemorrhoid... Read more »