What Are Thrombosed Piles: A Complete Guide Haemorrhoids, also known as swollen rectal veins, are inflamed veins in the rectal area. When a blood clot forms inside one, it leads to a thrombosed haemorrhoid—a disruptive condition requiring attention. Below, explore the symptoms, triggers, and solutions for this painful condition. ### https://share.evernote.com/note/6a188c4f-ce05-7d79-6cf2-29f080f1c460