External hemorrhoids are characterized by:

External hemorrhoids are indeed characterized by clots in the veins covered by skin. They generally form when veins around the anus become engorged with blood and may thrombose, leading to the formation of a clot. This condition often manifests as a painful lump or swelling on the outside of the anus, which is covered by sensitive skin.

The presence of clotting distinguishes external hemorrhoids from other types, such as internal hemorrhoids, which occur higher up in the anal canal and may not cause the same level of acute pain because they are covered by rectal mucosa, which has less pain sensitivity. Understanding the anatomical location and signs of external hemorrhoids helps clarify their specific characteristics, particularly how they differ from internal hemorrhoids or other anal conditions.