What Are Thrombosed Piles: Everything You Should Know Haemorrhoids, commonly known as swollen rectal veins, are dilated veins in the rectal area. If a clot develops in a haemorrhoid, it leads to a thrombosed haemorrhoid—a painful condition affecting daily life. Below, explore the symptoms, causes, and solutions for thrombosed haemorrhoids. https://www.zupyak.com/p/4593967/t/what-are-thrombosed-haemorrhoids-or-piles