Understanding Thrombosed Piles: A Complete Guide Piles, commonly known as swollen rectal veins, are dilated veins in the anal area. If a clot develops in a haemorrhoid, it leads to a thrombosed haemorrhoid—a disruptive condition affecting daily life. Below, explore the signs, causes, and treatment options for this painful condition. https://www.tumblr.com/sunnyagrwal/785699262708203520/what-are-thrombosed-haemorrhoids-or-piles?source=share