What Are Thrombosed Haemorrhoids: In-Depth Overview Piles, 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 pile—a debilitating condition requiring attention. Below, explore the symptoms, triggers, and solutions for this painful condition. ### Definition https://www.behance.net/gallery/227658877/What-Are-Thrombosed-Haemorrhoids-or-Piles