Rectal Bleeding
Bleeding is your body's signal — but it doesn't always mean the worst.
Rectal bleeding is a very common symptom, and most causes are not colorectal cancer. Benign conditions like hemorrhoids and anal fissures account for the vast majority. However, bleeding still requires professional evaluation to rule out serious conditions, especially when persistent or recurrent.
Common Causes
Hemorrhoids
The most common cause of bleeding. Usually bright red blood on wiping or dripping into the toilet, stopping after bowel movement.
Anal Fissure
A tear in the anal skin causing sharp pain with small amounts of bright blood during bowel movements, often from hard stools or straining.
Colon Polyps
Polyps are growths on the colon lining, some with cancer potential. Usually painless but may cause intermittent bleeding.
Bowel Inflammation
Including infectious colitis, ulcerative colitis, etc., potentially accompanied by abdominal pain, diarrhea, and bloody stools.
Colorectal Cancer (less common but must be ruled out)
While a less common cause of bleeding, early detection has an excellent prognosis, so persistent bleeding should never be ignored.
When Should You See a Doctor Soon?
- ⚠️Bleeding persists for more than 1–2 weeks or recurs repeatedly
- ⚠️Accompanied by unexplained weight loss
- ⚠️Signs of anemia (dizziness, fatigue, pale appearance)
- ⚠️Over 40 years old with first-time bloody stool
- ⚠️Family history of colorectal cancer
- ⚠️Changes in bowel habits occurring simultaneously (diarrhea or constipation)
How Does Dr. Huang Evaluate?
In the clinic, Dr. Huang first conducts a detailed history to understand bleeding patterns, frequency, and associated symptoms, followed by digital rectal exam and anoscopy. In most cases, a preliminary cause can be determined during the visit — not everyone needs an immediate colonoscopy. Dr. Huang will provide personalized evaluation recommendations based on your age, symptoms, and risk factors, so you can understand your condition with peace of mind.
Not Sure About Your Condition? Let a Specialist Help
Dr. Huang's clinic hours: Wednesday & Friday afternoons (KSVGH). Book an appointment for a professional assessment.