Internal hemorrhoids most often show up as painless rectal bleeding, typically noticed as bright red blood on toilet paper or in the toilet bowl after a bowel movement. Because they form inside the rectum rather than around the opening of the anus, you usually can’t see or feel them, and many people have them without knowing it. The symptoms you experience depend largely on how far the hemorrhoid has progressed.
Why Internal Hemorrhoids Don’t Usually Hurt
There’s a dividing line inside the anal canal called the dentate line. Above it, the tissue is supplied by visceral nerves, which don’t register sharp pain the way skin nerves do. Internal hemorrhoids form above this line, which is why they’re typically painless even when they bleed. External hemorrhoids, by contrast, sit below this line in tissue rich with pain-sensing nerves, which is why they can be intensely uncomfortable.
If you’re experiencing significant pain along with bleeding, that’s worth paying attention to. Pain often points to something other than a straightforward internal hemorrhoid, such as an anal fissure (a small tear), a perianal abscess, or a thrombosed external hemorrhoid where a blood clot has formed.
Painless Bleeding Is the Earliest Sign
The most common first symptom is small amounts of bright red blood. You might see it on the toilet paper after wiping, dripping into the bowl, or coating the surface of your stool. The blood is bright red because it’s fresh, coming from swollen blood vessels just inside the rectum that get irritated during a bowel movement. Straining, passing hard stools, or sitting on the toilet for extended periods can all trigger or worsen the bleeding.
At this early stage (grade 1), the hemorrhoid stays inside the rectum. It doesn’t bulge out, and bleeding may be the only clue it exists. Some people notice it once and then not again for weeks or months, while others see blood regularly.
Symptoms That Develop as Hemorrhoids Progress
Internal hemorrhoids are graded on a four-level scale based on how much they protrude from the anal canal. Each grade brings a different set of symptoms.
Grade 1: The hemorrhoid remains inside the rectum. Painless bleeding is typically the only symptom, if there are symptoms at all.
Grade 2: The hemorrhoid pushes out (prolapses) during a bowel movement but slides back in on its own afterward. You may feel a brief sensation of fullness or a soft bulge during straining that resolves within seconds or minutes. Bleeding tends to be more frequent at this stage.
Grade 3: The hemorrhoid prolapses and doesn’t go back in by itself. You need to push it back in manually with a finger. At this point, you’re more likely to notice mucus discharge, persistent moisture around the anus, and a feeling that something is “stuck” or that you haven’t fully emptied your bowel after wiping.
Grade 4: The hemorrhoid stays prolapsed and can’t be pushed back in. It may become strangulated, meaning its blood supply gets cut off, which can cause significant pain and swelling. This is the one scenario where internal hemorrhoids do become painful. In rare cases, the tissue can develop blood clots or begin to break down.
Beyond Bleeding: Other Symptoms to Recognize
As internal hemorrhoids enlarge or prolapse, they can produce a range of symptoms beyond bleeding that people don’t always connect to hemorrhoids.
- Mucus discharge: A clear or white fluid that leaks from the anus, sometimes enough to stain underwear.
- Itching around the anus: This is usually caused by mucus or moisture irritating the surrounding skin, not the hemorrhoid itself.
- A feeling of incomplete evacuation: A persistent sense that you still need to go, or that stool is stuck, even after you’ve finished a bowel movement.
- A soft lump near the anus: With grade 3 or 4 hemorrhoids, you may feel tissue protruding during or after a bowel movement.
These symptoms tend to come and go. They often flare during periods of constipation, prolonged sitting, heavy lifting, or pregnancy, then settle down when the underlying pressure is relieved.
When Bleeding Could Mean Something Else
Rectal bleeding is common, and hemorrhoids are by far the most frequent cause. But the same symptom can also signal colorectal cancer, inflammatory bowel disease, or other conditions that need different treatment. A few characteristics help distinguish hemorrhoid bleeding from something more serious.
Hemorrhoid blood is typically bright red, appears on the surface of stool or on tissue, and comes and goes. Bleeding from colorectal cancer tends to be more persistent, and the blood may be darker in color. Cancer can also cause symptoms that hemorrhoids don’t: unexplained weight loss, persistent abdominal pain or cramping, progressive changes in bowel habits like worsening constipation or new diarrhea, and overwhelming fatigue.
Current guidelines from the American Society of Colon and Rectal Surgeons recommend a colonoscopy when no obvious source of anorectal bleeding is found, when abdominal symptoms like pain or bloating accompany the bleeding, or when bleeding continues after successful hemorrhoid treatment. Adults who are due for routine colorectal cancer screening should also follow through on that regardless of whether hemorrhoids are present.
How Internal Hemorrhoids Are Identified
Because internal hemorrhoids sit inside the rectum, you can’t diagnose them yourself. A physical exam typically includes a digital rectal examination to check for other conditions and assess muscle tone. An anoscopy, where a short, lighted tube is inserted a few inches into the anal canal, gives a direct view of the hemorrhoidal tissue and can rule out other causes of bleeding. Neither exam takes long, and both are done in an office setting.
If your symptoms, age, or family history raise any concern about colorectal disease, a full colonoscopy may be recommended to examine the entire colon. This is especially important if bleeding doesn’t match a typical hemorrhoid pattern or if you have risk factors for colorectal cancer.