Complaints & connections · borters.ch
Often harmless from haemorrhoids — still: blood in the stool is always investigated, never just watched.
Also known as: blood in stool · rectal bleeding · black tarry stool
Open in the tool — with search and all the links →This compilation is for information and replaces neither medical diagnosis nor treatment. If you have symptoms, see a doctor.
Blood in the stool looks alarming but very often has a harmless cause — most commonly haemorrhoids or a small anal tear (fissure), recognisable as bright-red blood on the paper or stool. Even so: any blood in the stool should be medically assessed to safely rule out rarer but important causes (inflammation, polyps, tumours) — usually with a reassuring result. Noting the colour helps: bright red points to the lower rectum; black, sticky “tarry” stool to bleeding higher up (stomach) — the latter needs prompt assessment. Some foods (beetroot) or iron supplements can also darken the stool without it being blood.
The key step: always have it assessed — usually reassuring, rarely important.
Bright/dark red, pain, change in bowel habit, weight loss — this helps.
Softer stool (fibre, fluids) eases haemorrhoids and fissures.
Black sticky stool or a lot of blood needs prompt assessment.
With a heavy load the rectum becomes inflamed; in children it can prolapse on straining. The stool sample finds the eggs reliably.
Amoebic dysentery causes bloody, mucous stool with cramps, often without high fever. It is looked for before an inflammatory bowel disease is treated.
The eggs travel through the bowel wall and leave blood and mucus. Anyone who was in a lake or river in Africa, Brazil or South-East Asia is tested for it.
Visible blood in the stool occurs in about one in fifteen adults a year. By far the most common reasons are haemorrhoids and a tear at the anus. From fifty, with painless blood, with dark or tarry stool, and with any bleeding lasting more than two to four weeks, a scope is done — not because it is usually serious, but because that is the only way to separate the one case from the rest.
Ointments and suppositories for haemorrhoids ease itching and burning; they stop no bleeding and shrink no pile. Cortisone-containing preparations are meant for a few days, because they thin the skin there. What is decisive is what is not done: not putting a bleed down to haemorrhoids yourself — the most common cause is also the most common wrong assumption. Soft stool is the measure that helps with almost every cause.
Usually points to haemorrhoids or a fissure (common, harmless).
Can indicate upper-GI bleeding — assess promptly.
Beetroot or iron tablets can darken the stool.
Even if haemorrhoids are suspected: have it confirmed once.
Where blood is lost regularly the store empties long before the haemoglobin falls. Ferritin shows this earlier than the blood count — and refilling takes months, not weeks.
Clearly improves the uptake of plant iron. A glass of orange juice or some pepper with the iron-rich meal does more than the choice of preparation.
Belongs in the workup of any anaemia, because a lack makes the same picture as iron deficiency — only with large instead of small red cells. Both can exist side by side.
Needed for making new blood cells and quickly short with alcohol, in pregnancy and under certain medicines.
Repeated small blood loss empties the iron stores long before the blood count shifts. Replaced by ferritin — and the reason for the bleeding belongs found before iron is taken, not after.
Where hard stool and haemorrhoids are the source, softer stool is the actual treatment: 5–10 g a day with plenty of water, worked up over 1–2 weeks.
Clearly worthwhile and well supported when deficient — vegan, older adults, certain drugs. No energy boost without a deficiency.
In pregnancy clearly established against neural-tube defects, otherwise mainly with deficiency. Can mask a B12 deficiency — watch both.
Repeated small blood loss empties the iron stores long before the blood count shifts. Iron deficiency anaemia in a man and in a woman after menopause counts as bleeding from the bowel until proven otherwise.
In pregnancy this hormone slows the gut and the veins widen — haemorrhoids and hard stool are then the most common source. It still belongs looked at.
Beetroot colours stool red, iron and blueberries black. This is harmless and worth knowing — it changes nothing about real blood in the stool belonging investigated.
Haemorrhoids and fissures lie behind most cases of bright red blood. 25–30 g fibre a day with enough fluid clearly reduces both in studies.
Haemorrhoids and fissures lie behind most cases of bright red blood — fibre clearly reduces bleeding and complaints there. This does not replace investigation, it accompanies it.