What Are Thrombosed Haemorrhoids: Everything You Should Know Haemorrhoids, also known as piles, are dilated veins in the anal-rectal area. When a blood clot forms inside one, it causes a thrombosed haemorrhoid—a debilitating condition affecting daily life. Below, explore the signs, causes, and treatment options for this painful condition. ### https://share.evernote.com/note/6a188c4f-ce05-7d79-6cf2-29f080f1c460