I assumed that you mean there is fresh blood in stool.
Fresh Blood in stools, is usually due to lower GI bleeding.
- Hemorrhoids or piles, they represent the most common cause of lower GI bleeding, and are easy to be diagnosed by clinical examination. Anorectal fissures as well can result in Bleeding per rectum and are easily diagnosed.
- Inflammation of the mucosa lining the rectum or the rectum and colon a condition known as proctitis or proctocolitis respectively.
These conditions are either due to infectious diseases or non infectious disease as a part of inflammatory bowel disease (including Crohn's disease and Ulcerative colitis)
Infections include a variety of parasites and protozoa e. g. Entamoeba histolytica and Salmonella or
a part of sexually transmitted disease like herpes simplex and Chlamydia.
Diagnostic tests include stool analysis to check for parasites and protozoa. Samples are collected before receiving any medication and should be repeated for 3 times to find the possible organism causing the infection.
In such cases , diarrhea, mucous and blood in stools are the common symptoms.
- Irritable bowel syndrome IBS,
Commonly people who have IBS complain of
Abdominal pain or colic
A bloated abdomen
Either Diarrhea or Constipation or an alternating between both of them
Mucus or less commonly blood containing stools.
Other diseases that can give similar pictures to IBS and have to be excluded are Gastritis, GERD, and Peptic ulcer. But Blood in stools is usually occult and not fresh red.
- Polyps, diverticulosis and Colon cancer.
Colonoscopy is of choice in the diagnosis of these cases.
You have to be properly checked and investigated. Only by complete history, physical examination and investigations, the correct diagnosis can be reached. I advise you to be checked by your doctor as early as possible.
This answer does not substitute for direct medical consultation.
Dr. Safaa Mahmoud.
MB BCh, MSc Internal Medicine. MD Medical Oncology.
PhD Experimental Medicine and Biochemical Science.