Template:Hemorrhoid background

Anatomy of the anus.

Internal and external hemorrhoids divided by pectinate (dentate) line

• Pathologic state cccurs when internal or external hemorrhoid plexus become engorged, prolapsed, or thrombosed
• Bleeding is usually limited (surface of stool, on toilet tissue, at end of defecation)
  • Passage of blood clots requires evaluation for colon lesions

Risk Factors

• Constipation and straining at stool
• Frequent diarrhea
• Older age
• IBD