How to prevent Piles or Hemorrhoids How to prevent Piles or Hemorrhoids Piles are also known as Hemorrhoids. They are hemorrhoids that become inflamed. Hemorrhoidsare clumps of blood vessels (veins) in the rectum. The hemorrhoidal veins are located in the lowest area of the rectum just above the anus. A doctor can usually diagnose piles rapidly on examination. Most of the times piles can be self diagnosed. About 10% of patients who visit their doctor about piles require surgical treatment….