Piles are collections of tissue and vein that become inflamed and swollen. The size of piles can vary, and they are found inside or outside the anus. Piles occur due to chronic constipation, chronic diarrhea, lifting heavy weights, pregnancy, or straining when passing a stool.

They become pathological (piles) when swollen or inflamed. Piles are a very common ailment that may affect men or women at any age. These are caused due to continuous high pressure in the veins. Other causes include constipation, excessive straining during bowel movements and persistent diarrhoea.