What are hemorrhoids?
The term hemorrhoids (or piles) refers to a condition in which the veins around the anus or lower rectum are swollen and inflamed.
The rectum is the last part of the large intestine leading to the anus. The anus is the opening at the end of the digestive tract where bowel contents leave the body.
There Are Two Different Types Of Hemorrhoids:
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External hemorrhoids are located under the skin around the anus.
External hemorrhoids are prone to develop thrombosis: when a vein ruptures and/or a blood clot develops, the hemorrhoid becomes a thrombosed hemorrhoid.
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Internal hemorrhoids develop in the lower rectum.

Internal hemorrhoids may protrude, or prolapse, through the anus. Most prolapsed hemorrhoids shrink back inside the rectum on their own.
Severely
prolapsed hemorrhoids may protrude permanently and require treatment. Internal hemorrhoids can be further graded by the
degree of prolapse:
- Grade 1: No prolapse.
- Grade 2: Prolapse upon defecation but spontaneously reduce.
- Grade 3: Prolapse upon defecation and must be manually reduced.
- Grade 4: Prolapsed and cannot be manually reduced.
How common are hemorrhoids?
Hemorrhoids are common in both men and women. About
half of the population has hemorrhoids by age 50. Hemorrhoids are also common among pregnant women. The pressure of the fetus on the abdomen, as well as hormonal changes, cause the hemorrhoidal vessels to enlarge. These vessels are also placed under excessive pressure during childbirth. For most women, however, hemorrhoids caused by pregnancy are a temporary problem.
APA: Hemorrhoids. (n.d.). Retrieved from http://digestive.niddk.nih.gov/ddiseases/pubs/hemorrhoids/
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