Hemorrhoids:Dilated (enlarged) veins in the walls of theanusand sometimes around therectum, usually caused by untreated constipation but occasionally associated with chronic diarrhea. Symptoms start with bleeding after defecation. If untreated,hemorrhoidscan worsen, protruding from the anus. Treatment involves changing the diet to prevent constipation and avoid further irritation, the use of topical medication, and sometimes surgery. Also known as piles.
