Hemorrhoids causing blood in the stool are mostly due to internal hemorrhoids, which are a manifestation of varicose veins in the hemorrhoidal veins. During defecation, because the stool is rather dry and hard, it can easily scratch the hemorrhoidal veins as it moves downward. Due to internal hemorrhoids, the hemorrhoidal veins become distended and the vein walls become very thin, making them easily damaged, thus leading to bleeding. Minor cases may involve blood during defecation or dripping blood, while more severe cases can present with spraying blood during bowel movements. Depending on the amount of bleeding, one should choose treatments such as medications, minimally invasive procedures, or surgery.