Definition: Swollen veins in the lower part of the RECTUM or ANUS. Hemorrhoids can be inside the anus (internal), under the skin around the anus (external), or protruding from inside to outside of the anus. People with hemorrhoids may or may not exhibit symptoms which include bleeding, itching, and pain.
Synonyms (terms occurring on more labels are shown first): hemorrhoids, haemorrhoids, hemorrhoid, hemo rrhoids
More information: PubMed search and possibly Wikipedia