Also known as hemorrhoids, piles are characterized by swollen blood vessels around the opening of the anus. The veins around your anus tend to stretch under pressure and may bulge or swell, forming a ring around the anal cavity, causing outer hemorrhoids. The other type of hemorrhoids known as internal hemorrhoid are formed inside the rectum, and are usually painless. Usually, patients suffering from piles get well on their own before serious negative effects manifest. Straining during bowel movements, having chronic diarrhoea or constipation, obesity, pregnancy and low fibre diets are usual causes.
