Blood clot. In some cases a clot can form in the hemorrhoid. This is termed a thrombosed hemorrhoid. Though not perilous, it might be extremely painful and occasionally should be drained. Blood can pool within an external hemorrhoid and form a clot, named a thrombus. A thrombosed hemorrhoid may lead https://www.sgvascularctr.com/varicose-vein-treatment-in-singapore-answers-to-your-most-common-questions/