Why blood in stool in dysentery cases?

Blood in the stool during dysentery cases is primarily due to inflammation and ulceration of the intestinal lining caused by infectious agents, such as bacteria (e.g., Shigella or Entamoeba histolytica). The inflammation leads to damage of blood vessels, resulting in bleeding that mixes with stool. Additionally, the presence of mucus and pus may accompany the blood, indicating severe intestinal irritation and infection. Prompt medical attention is essential to manage the infection and prevent complications.