Understanding Thrombosed Piles: A Complete Guide Haemorrhoids, also known as swollen rectal veins, are dilated veins in the anal area. If a clot develops in a haemorrhoid, it causes a thrombosed haemorrhoid—a debilitating condition requiring attention. This article will guide you through the signs, triggers, and solutions for thrombosed haemorrhoids. https://share.evernote.com/note/6a188c4f-ce05-7d79-6cf2-29f080f1c460