Piles or Hemorrhoids are swollen veins of the rectum and anal canal, which are thought to enlarge over time secondary to constipation and straining during bowel movements. These are the most common cause of bleeding associated with bowel movements, but it is important to get evaluated by a physician systematically for reaching a proper diagnosis and ruling out more serious conditions.
Avoiding constipation and prolonged straining can prevent development of these issues and should also become an integral part of every treatment strategy. Medication and sometimes operations are necessary to restore the normal anatomy for symptom relief and treatment of complications like severe anemia.