What is the primary characteristic of hemorrhoids?

The primary characteristic of hemorrhoids is the presence of swollen veins in the distal rectum or anus. Hemorrhoids occur when the veins in this area become engorged with blood, leading to discomfort, pain, and potential bleeding during bowel movements. This condition is often exacerbated by factors such as straining during defecation, prolonged sitting, or increased pressure on the pelvic area during pregnancy. Recognizing that hemorrhoids specifically involve the dilation and inflammation of the veins in the rectal region is key to understanding their nature and symptoms. This distinction is important for proper diagnosis and treatment, as it differentiates hemorrhoids from other gastrointestinal disorders.