Rectal Bleeding in Brisbane
Prompt, thorough assessment of rectal bleeding and haemorrhoids by Brisbane general surgeon Dr Goutham Sivasuthan, with colonoscopy where it is needed, across Brisbane, Redland, Moreton Bay and Logan.
Do not ignore rectal bleeding
Rectal bleeding is common and most often caused by minor, treatable conditions such as haemorrhoids or anal fissures — but because it can occasionally be the first sign of something serious, it should always be assessed.
Dr Goutham, a Brisbane general surgeon at Upper Edge Surgery, provides prompt, thorough evaluation of rectal bleeding. This page explains the possible causes, the warning signs to watch for, and how a colonoscopy or other tests can find the cause and guide treatment — so you get answers and peace of mind.
What is rectal bleeding?
Rectal bleeding is any bleeding from the back passage. It may appear as bright red blood on the toilet paper, blood in the bowl, streaks on the stool, or darker stools. Even small amounts that come and go should not be dismissed, particularly if they are recurrent or accompanied by pain, a change in bowel habit, or weight loss.
What the colour of the blood can tell you
- Bright red blood — usually from the anus or lower rectum, often haemorrhoids or a fissure.
- Darker red or mixed into the stool — may come from higher in the colon and warrants investigation.
- Black, tarry stools (melaena) — can indicate bleeding higher in the digestive tract, such as the stomach, and needs prompt assessment.
The colour gives clues, but only proper assessment can confirm the source — which is why persistent bleeding is investigated rather than assumed to be harmless.
Common causes of rectal bleeding
Haemorrhoids
Swollen veins in the lower rectum or anus — bright red bleeding, itching, lumps and mucus discharge.
Anal fissures
A small tear in the skin of the anus, often from hard stools — sharp pain on passing a motion and bright red blood.
Diverticular disease
Small pouches in the colon wall that can bleed and, if inflamed, cause pain.
Inflammatory bowel disease
Crohn disease or ulcerative colitis — chronic inflammation, diarrhoea, cramps and bleeding.
Polyps
Growths in the colon that are often harmless but some can progress to cancer; a colonoscopy detects and removes them.
Colorectal cancer
Less common, but ongoing or unexplained bleeding always warrants investigation, especially over 45 or with a family history.
When should you see a doctor?
- Recurrent or persistent bleeding
- Large amounts of blood, clots, or black tarry stools
- A change in bowel habit lasting more than a couple of weeks
- Abdominal pain, bloating or cramping with the bleeding
- Unexplained tiredness, weakness or weight loss
- A personal or family history of bowel cancer or polyps
- Aged 45 or over and not recently screened
Diagnosing the cause
- History & examination — your symptoms, bowel habit and family history, plus a gentle examination of the back passage.
- Colonoscopy — the gold-standard test, examining the entire colon to find or exclude polyps, inflammation, diverticula or tumours, and to remove polyps in the same procedure. Learn about colonoscopy →
- Blood and stool tests — to check for anaemia, infection or inflammation.
Treatment options
Treatment depends entirely on the cause. Haemorrhoids respond to a high-fibre diet, good hydration, topical treatments and, if needed, procedures such as rubber-band ligation. Anal fissures are managed with stool softeners, topical creams and occasionally a minor procedure. Diverticular disease and inflammatory bowel disease have their own targeted treatments. Polyps are removed at colonoscopy, and colorectal cancer, if found, is treated according to its stage — which is why finding the cause early matters so much.
Expert, reassuring colorectal care
- ✓Experienced specialist — colorectal conditions and minimally invasive procedures.
- ✓Prompt colonoscopy — at leading Brisbane and Redland facilities.
- ✓Clear explanations — guidance and reassurance at every step.
- ✓Timely appointments — fast access reduces anxiety and delay.
- ✓Care close to home — Brisbane, Redland, Moreton Bay and Logan.
Rectal bleeding FAQs
Is rectal bleeding always serious?+
Not usually — haemorrhoids and fissures are common and easily treated. But because bleeding can occasionally signal something serious, persistent or unexplained bleeding should always be assessed.
How do I know if my bleeding is from cancer?+
You cannot tell from the appearance alone — only a colonoscopy can confirm or exclude cancer. Warning signs include weight loss, a persistent change in bowel habit and a family history.
When should I see a doctor urgently?+
Seek urgent care for heavy bleeding, black tarry stools, dizziness or weakness, or bleeding with severe abdominal pain.
Does rectal bleeding mean I need surgery?+
Often not — many causes are treated with diet, medication or minor procedures. Surgery is reserved for specific conditions such as severe haemorrhoids or cancer.
Can haemorrhoids be treated without an operation?+
Yes. Most haemorrhoids improve with a high-fibre diet, hydration and topical treatments, and many that need more can be managed with simple in-rooms or day procedures like banding.
At what age should I start bowel screening?+
Australian guidance now recommends considering bowel screening from age 45, and earlier if you have symptoms or a family history. Rectal bleeding at any age should be assessed.
Will a colonoscopy hurt?+
No. A colonoscopy is performed under sedation, so you are comfortable and feel little to nothing during the procedure.
What if my bleeding stops on its own?+
Even if bleeding settles, it is wise to be assessed if it was significant, recurrent or unexplained, as the underlying cause may still need treatment.
Caring for South-East Queensland
Dr Goutham consults and operates across Brisbane, Redland, Moreton Bay and Logan — care close to home, wherever you are in South-East Queensland.
Trusted resources
Last medically reviewed by Dr Goutham Sivasuthan, specialist surgeon — June 2026.
Concerned about rectal bleeding?
Book a prompt assessment with Dr Goutham, including colonoscopy where needed, to find and treat the cause.