Definition & Facts of Hemorrhoids

What are hemorrhoids?

Hemorrhoids, also called piles, are swollen and inflamed veins around your anus or in your lower rectum.

The two types of hemorrhoids are

  • external hemorrhoids, which form under the skin around the anus
  • internal hemorrhoids, which form in the lining of the anus and lower rectum
Drawing showing internal and external hemorrhoids in the rectum and anus.
The two types of hemorrhoids are external and internal.

How common are hemorrhoids?

Hemorrhoids are common in both men and women1 and affect about 1 in 20 Americans.2 About half of adults older than age 50 have hemorrhoids.2

Who is more likely to get hemorrhoids?

You are more likely to get hemorrhoids if you

What are the complications of hemorrhoids?

Complications of hemorrhoids can include the following:

  • blood clots in an external hemorrhoid
  • skin tags—extra skin left behind when a blood clot in an external hemorrhoid dissolves
  • infection of a sore on an external hemorrhoid
  • strangulated hemorrhoid—when the muscles around your anus cut off the blood supply to an internal hemorrhoid that has fallen through your anal opening
  • anemia

References

October 2016
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