A thrombosed external ... An external hemorrhoid affects the veins of the skin outside the anus. The hemorrhoid contains one or more blood clots (thrombus) that are usually very painful and swollen.

Hemorrhoids, also known as piles, are swollen or inflamed veins in your rectum or anus. They develop from increased pressure ...

While rare, some extreme cases may require a surgery ... hemorrhoids. While external hemorrhoids generally go away within a ...