What are hemroids?
Hemroids are enlarged veins that develop in the Excretory Orifice canal. Although uncomfortable at times, this common condition rarely poses a serious problem.
Normally, tissue surrounding the inside of the Excretory Orifice, sometimes called "Excretory Orifice cushions," fills with blood to help control bowel movements. Hemroids develop when excessive pressure or other factors cause the veins within these cushions to swell and stretch.
Nearly everyone has hemroids at some time. They can develop at any age, but the incidence increases after age 30. About 50% of people older than 50 have had hemroids at some time in their life. 1
What causes hemroids?
Excessive pressure on the veins in the pelvic and rectal area causes hemroids. As pressure increases, blood pools in veins and causes them to swell, stretching the surrounding tissue and forming hemroids. Increased pressure can come from rushing to complete a bowel movement or from constipation or persistent diarrhea, if either causes too much straining during bowel movements.
Being overweight also can contribute to developing hemroids.
Pregnant women frequently develop hemroids during the last 6 months of pregnancy because of increased pressure on the blood vessels in the pelvic area. Straining to push the baby out during labor can also cause hemroids.