Blood in the stool should not be ignored because it can happen due to piles, anal fissures, infection, constipation, inflammation, or more serious intestinal conditions. The treatment depends on the cause and whether the bleeding is mild or severe. If the blood is bright red and occurs with constipation or pain during passing stool, piles or fissures are common causes. Increasing fibre intake, drinking enough water, and avoiding straining may help. However, black stools, large amounts of blood, weight loss, weakness, stomach pain, or persistent bleeding require immediate medical evaluation. Avoid taking medicines on your own without knowing the cause because some conditions need specific treatment or investigations, such as stool tests or colon examination.