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A hemorrhoid is “an itching or painful mass of dilated veins in swollen anal tissue”. Hemorrhoids cause painful, burn-like feelings in the rectum and anus, and often one will notice some associated bleeding. Hemorrhoids are essentially the veins in the anus which have become swollen with blood. In some regards, hemorrhoids are similar to varicose veins. In fact, some of the treatments for varicose veins can be used also for hemorrhoids.
If the vein swelling is located above the sphincter part of the anal canal, then internal hemorrhoids can develop. If the vein swelling is at the lower end of the anal canal, then external hemorrhoids may develop.
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