What Are Thrombosed Piles: A Complete Guide Piles, Also known as piles, are dilated veins in the anal-rectal area. If a clot develops in a haemorrhoid, it causes a thrombosed haemorrhoid—a disruptive condition requiring attention. Below, explore the symptoms, triggers, and treatment options for this painful condition. ### Definition of https://www.zupyak.com/p/4593967/t/what-are-thrombosed-haemorrhoids-or-piles