The simplest way to tell internal from external hemorrhoids is location and what you feel. External hemorrhoids form under the skin around your anus, so you can usually see or feel them as a lump. Internal hemorrhoids form inside the rectum, where you can’t see or feel them, and they typically announce themselves only through painless bleeding. The two types differ in pain, appearance, and how they’re treated, so knowing which you’re dealing with helps you understand what to expect.
Why the Two Types Feel So Different
The difference comes down to nerve supply. A boundary inside the anal canal, called the dentate line, separates two zones with very different sensitivity. Above that line, tissue is supplied by nerves that don’t register sharp pain, touch, or temperature. Below it, tissue has the same rich nerve endings as the rest of your skin.
Internal hemorrhoids sit above that boundary. Because they’re in a zone with minimal pain sensation, most people don’t even know they have them. External hemorrhoids sit below it, right under the sensitive skin around your anus. That’s why external hemorrhoids can itch, ache, and hurt when you sit, while internal ones are typically painless.
Signs of an External Hemorrhoid
External hemorrhoids are the easier type to identify on your own. You can often feel a firm, tender lump near the opening of your anus. Common symptoms include itchiness or irritation around the anus, soreness that worsens with sitting, and small amounts of blood when you wipe. The lump may feel soft or firm depending on whether a blood clot has formed inside it.
When a clot does form, it’s called a thrombosed hemorrhoid. These are hard to miss. The lump turns a distinctive purple-blue color and becomes intensely painful, sometimes suddenly. You can usually see it or feel it clearly. The pain tends to peak within the first 48 to 72 hours and then gradually improves as the clot is reabsorbed, though the lump itself can linger for weeks.
Signs of an Internal Hemorrhoid
Internal hemorrhoids are trickier because they’re hidden inside the rectum. The hallmark symptom is painless bleeding: small amounts of bright red blood on toilet paper or dripping into the bowl after a bowel movement. You won’t feel a lump unless the hemorrhoid has grown large enough to push through the anal opening, which is called prolapse.
Internal hemorrhoids are graded on a four-point scale based on how much they prolapse:
- Grade I: No prolapse. The hemorrhoid stays inside the rectum and may bleed but can’t be seen or felt.
- Grade II: The hemorrhoid bulges out during a bowel movement but slides back in on its own.
- Grade III: The hemorrhoid protrudes and has to be pushed back in manually. Itching and mucus leakage are common at this stage.
- Grade IV: The hemorrhoid stays outside permanently and can’t be pushed back in. Chronic irritation and swelling develop around it.
This grading matters because a prolapsed internal hemorrhoid (Grade III or IV) can be confusing. It looks like a lump near the anus, similar to an external hemorrhoid. The key difference: a prolapsed internal hemorrhoid originates from inside the rectum and may have a softer, more moist surface compared to the skin-covered firmness of an external one. If you’re unsure, that’s a situation where a medical exam gives you a clear answer.
Comparing the Two Side by Side
The practical differences break down like this:
- Pain: External hemorrhoids are often painful, especially if thrombosed. Internal hemorrhoids rarely hurt unless they prolapse.
- Bleeding: Internal hemorrhoids typically produce bright red blood that drips into the toilet or shows on tissue, separate from stool. External hemorrhoids can also bleed, usually in smaller amounts when wiped.
- Visible lump: External hemorrhoids are visible or easily felt. Internal hemorrhoids are invisible unless prolapsed.
- Itching: Both types can itch, but external hemorrhoids cause itching more consistently because they irritate the sensitive skin around the anus.
How Doctors Confirm the Type
External hemorrhoids are straightforward to diagnose visually. Internal hemorrhoids are a different story. Because they sit inside the rectum, a standard physical exam may not reveal them. A digital rectal exam (using a gloved finger) can sometimes detect them, but when that doesn’t provide enough information, doctors use a procedure called anoscopy.
Anoscopy involves inserting a short, hollow tube (about five inches long and slightly wider than a finger) into the anal canal, then shining a light through it to see the tissue directly. The procedure takes just a few minutes and doesn’t require sedation. It gives a clear view of internal hemorrhoids and their grade, and it also helps rule out other causes of rectal bleeding, which is important since conditions like polyps or inflammatory bowel disease can produce similar symptoms.
Why the Distinction Affects Treatment
Knowing the type changes your treatment options. Both internal and external hemorrhoids can improve with the same basic at-home measures: eating more fiber, drinking enough water, avoiding straining during bowel movements, and using over-the-counter creams or witch hazel pads to ease discomfort.
When those steps aren’t enough, the next options diverge. Internal hemorrhoids can be treated with rubber band ligation, a quick office procedure where a small band is placed around the base of the hemorrhoid to cut off blood flow. The tissue shrinks and falls off within a week or so. This procedure only works for internal hemorrhoids and may not be suitable for very large ones. If banding fails, surgical removal is the next step.
External hemorrhoids that are thrombosed and severely painful can sometimes be drained in a doctor’s office if caught early (within the first couple of days). Otherwise, they’re managed with pain relief and warm sitz baths while the clot resolves. Persistent or recurrent external hemorrhoids may eventually need surgical excision.
Bleeding That Needs Attention
Rectal bleeding is the most common symptom of both hemorrhoid types, and it’s easy to assume hemorrhoids are the cause. That’s often correct, but not always. Bright red blood on toilet paper after a bowel movement is typical of hemorrhoids. Blood that’s darker, mixed into the stool itself, or accompanied by abdominal pain, unexplained weight loss, nausea, fatigue, or dizziness points to something else entirely and warrants prompt evaluation. Heavy bleeding that won’t stop also needs immediate medical care regardless of the suspected cause.