Understanding Thrombosed Haemorrhoids: A Complete Guide Piles, also known as swollen rectal veins, are enlarged veins in the anal-rectal area. If a clot develops in a haemorrhoid, it leads to a thrombosed pile—a debilitating condition affecting daily life. Below, explore the symptoms, triggers, and solutions for thrombosed haemorrhoids. ### Understanding http://That subreddit doesn't exist