An external hemorrhoid typically looks like a small, soft lump or swelling right at the edge of the anus. It forms just beneath the skin surface, which makes it visible and easy to feel. The size ranges from a small pea to roughly 15 to 20 millimeters across in more pronounced cases. Depending on severity, the color can range from skin-toned to a noticeable blue or purple, caused by swollen veins visible beneath the thin anal skin.
General Appearance
In its mildest form, an external hemorrhoid may look like a slightly raised, fleshy bump near the anal opening. Some people notice a single lump, while others develop more than one. The skin over the swelling usually looks smooth and stretched. When the veins beneath are particularly dilated, a bluish tint shows through the skin, making the hemorrhoid more visually obvious.
Not every external hemorrhoid is dramatic. Small ones can be barely noticeable to the eye, mainly felt as a tender spot during wiping. Larger ones protrude more clearly and may look like a grape-sized bulge at the anal margin.
When a Blood Clot Forms
A thrombosed external hemorrhoid is one that has developed a blood clot inside it, and it looks distinctly different from a regular one. The hallmark is a firm, blue-purple lump on or around the anus. On lighter skin, this typically appears as a dark blue or purple knot. On darker skin tones, the same clot can look grey, black, or dark brown.
Thrombosed hemorrhoids are firmer to the touch than ordinary ones because the clot makes the tissue taut. They’re also considerably more painful. The surrounding skin may appear swollen and shiny from the pressure, and the lump itself can feel hard rather than squishy. This is the type that most often sends people to a mirror wondering what they’re looking at.
How the Appearance Changes Over Time
Most external hemorrhoids go away on their own within a few weeks. During that time, the appearance shifts gradually. A swollen, purple hemorrhoid will slowly lose its color as the body reabsorbs the pooled blood. The lump shrinks, softens, and eventually flattens.
One common change people don’t expect: after the hemorrhoid resolves, it can leave behind a small flap of loose skin called a perianal skin tag. This is leftover stretched skin that doesn’t fully retract once the swelling is gone. Skin tags are painless, soft, and the same color as surrounding skin. They’re harmless but permanent unless removed.
Signs That Something Is Wrong
A standard external hemorrhoid, even a thrombosed one, stays localized. It may hurt and bleed slightly, but the skin around it looks normal. If you notice spreading redness around the anus beyond the hemorrhoid itself, worsening pain despite home care, or a fever, those point toward a possible infection, which is uncommon but requires medical attention.
What It’s Not: Similar-Looking Conditions
Several other things can appear near the anus and look confusingly similar to an external hemorrhoid. Knowing the differences can save unnecessary worry or, in some cases, prompt you to get the right diagnosis.
Perianal Skin Tags
Skin tags are small, soft flaps of skin that hang off the anal margin. They’re flesh-colored, flat, and painless. Unlike a hemorrhoid, a skin tag doesn’t swell, change color, or feel tender. It stays the same size day to day. Many skin tags are actually remnants of old hemorrhoids that have healed.
Anal Warts
Anal warts are caused by HPV and look quite different up close. They’re flesh-colored or grayish, soft, and irregularly shaped, often with a rough or bumpy surface texture. They tend to appear in clusters rather than as a single round lump. A hemorrhoid, by contrast, is smoother, more uniform in shape, and often darker in color (red, blue, or purple) because of the swollen blood vessels inside it.
If what you’re seeing is a single, smooth, round or oval lump right at the anal edge that’s tender and possibly bluish, that’s the classic profile of an external hemorrhoid. Multiple small, rough, cauliflower-textured bumps suggest something else entirely.