There are many causes of blood in the stool, and the initial diagnosis needs to be made based on the patient’s other symptoms.
Patients with significant diarrhea, abdominal pain, fever, vomiting, and other clinical manifestations during the onset of blood in the stool are more likely to first consider intestinal inflammation, commonly seen in diseases such as bacterial enteritis and dysentery. Inflammation can directly cause bleeding manifestations due to damage to the intestinal mucosa.
Patients who have a long history of constipation, pain in the anus during defecation or a feeling of a foreign body protruding from the anus, are more likely to consider anal diseases such as hemorrhoids and anal fissures. The hemorrhoids are a clinical manifestation of prolonged constipation causing increased pressure in the abdominal cavity, which causes varicose veins around the anus. Anal fissure is a bleeding condition that occurs when dry stool cuts the rectal mucosa in the process of defecation. The above condition usually manifests as fresh blood symptoms.
Patients who repeatedly have painless blood in the stool with dark red blood color do not exclude the possibility of the presence of intestinal malignancies, such as rectal cancer and colon cancer. If necessary, you need to go to a hospital gastroenterology or anorectal examination to confirm the diagnosis in a timely manner.