Hemorrhoids are swollen veins in and around the rectal, which can bring discomfort and swelling. Hemorrhoids are classified into two categories based on their occurrence—internal and external hemorrhoids. Internal hemorrhoids happen when the tissue supporting the veins in the anal canal weakens and swells, and can protrude out. On the other hand, external hemorrhoids are swollen veins that occur under the surface of the skin at the anal opening.

What Causes Hemorrhoids

Hemorrhoids may form for various reasons. Usually, the swelling and inflammation of veins outside the anal verge are the results of long-time pressure caused by one's difficulty in passing fecal matter. The following factors may also be the causes of hemorrhoids.

• Age. Hemorrhoids are common in both men and women. While hemorrhoids usually begin to develop when one is in his 20s, hemorrhoid symptoms only appear at the age of 30 years old. About half of the population has hemorrhoids by age 50.

• Diet. A low-fiber diet can make fecal matter hard and dry. Highly refined foods such as white flour products and foods high in fat can result in a fiber-deficient diet. As a result, pain and bleeding may occur following a bowel movement.

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