Thrombosed hemorrhoids are extremely painful condition of hemorrhoids. This condition results in excessive swelling of the affected hemorrhoid. In certain cases, thrombosed hemorrhoids can be dangerous as well. This is particularly the case where infection or gangrene takes place.
This condition can occur both internally and externally.The thrombosed hemorrhoids condition occurs when the hemroid becomes filled with blood. This is because of the formation of blood clots that prevents the blood that comes into the hemroid from getting out.