Hemorrhoids are swollen blood vessels around the anus.
They commonly occur after 50, with millions of people afflicted,
and are also common in pregnancy.
Hemorrhoids may protrude externally or be internal to the body.
Although hemorrhoids are definitely irritating and sometimes debilitating,
they are almost never life-threatening or a symptom of something worse.
Hemorrhoids can often be prevented by healthy diets, avoiding toilet straining,
and other lifestyle changes.
Hemorrhoids: Hemorrhoids are swollen but normally present blood vessels in and around the anus and lower rectum that stretch under pressure, similar to varicose veins in the legs.
The increased pressure and swelling may result from straining to move the bowel. Other contributing factors include pregnancy, heredity, aging, and chronic constipation or diarrhea.
Hemorrhoids are either inside the anus (internal) or under the skin around the anus (external). 1
Researching symptoms of Hemorrhoids: Further information about the symptoms of Hemorrhoids is available including a list of symptoms of Hemorrhoids, other diseases that might have similar symptoms in differential diagnosis of Hemorrhoids, or alternatively return to research other symptoms in the symptom center.
Misdiagnosis and Hemorrhoids: Research more detailed information about misdiagnosis of Hemorrhoids, underlying causes of Hemorrhoids (possibly misdiagnosed), or research misdiagnosis of other diseases
Statistics and Hemorrhoids:
Various sources and calculations are available in statistics about Hemorrhoids,
prevalence and incidence statistics for Hemorrhoids,
and you can also research other medical statistics in our statistics center.
1. excerpt from Hemorrhoids: NIDDK
Last revision: May 28, 2003
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