Types of Hemorrhoids
The two different types of hemorrhoids are internal and external hemorrhoids. External hemorrhoids occur outside the anal verge of the canal as varicosities of the veins of the inferior rectal arteries while internal hemorrhoids occur inside the rectum as varicosities of the veins of the superior rectal arteries. External hemorrhoids can evolve into a more painful state called thrombosed hemorrhoid if a vein ruptures with a blood clot. Interior hemorrhoids can take the shape of prolapsed and strangulated hemorrhoids; the former is a form that is pushed out of the anus due to vein distension while the latter is caused if the blood supply to the region is cut off.