Hemorrhoids, dilated veins in the rectum, are categorized into internal and external hemorrhoids. Internal hemorrhoids occur well inside the rectum. Their most common symptom is bleeding associated with bowel movements. If they become quite large, they can prolapse, or protrude, through the anus and are then visible.

External hemorrhoids, caused by the dilation of rectal veins located closer to the anal opening, are often symptomless, although they can cause itching and irritation. If a blood clot forms in an external hemorrhoid, there may be pain, but the situation is not dangerous.

Constipation is very common. Many people consumes a diet that is notoriously low in fiber, the components of food that helps the bowels work well. Possible long-term complications of internal hemorrhoids consist of anemia from chronic blood loss, infection, ulceration of the hemorrhoid and after that scarring then it heals, and, as mentioned, thrombosis or clotting in the vein. However, there are not common, especially if one avoids constipation and other situations that can make the hemorrhoids worse.

Some people do have weaker veins than others, but constipation can cause people to strain when defecating, and this increased pressure caused the veins to dilate further. Eating fresh fruits and vegetables, whole-grain breads and cereals, whole wheat bread, oat meal and bran cereal as well as drinking plenty of water (some people say at least eight glasses a day) helps prevent constipation. In addition, pregnancy, prolonged standing, and straining to lift heavy objects increase pressure within the veins and can aggravate the hemorrhoids.

When hemorrhoids bleed or become painful, ointments or suppositories can be prescribed. The key treatment, however, is avoiding the straining that can make them worse.