Piles, the common name for hemorrhoids, look like swollen lumps or bumps on or around the anus. Their exact appearance depends on the type: external piles often appear as soft, skin-colored bumps on the anal surface, while internal piles are hidden inside the rectum and only become visible if they push outward. Color ranges from flesh-toned to deep purple, depending on how much blood has pooled inside.
External Piles
External piles form under the skin around the outside of the anus. They aren’t always visible, but when they swell, they look like small, rounded lumps on the anal surface. You can often see the bluish color of dilated veins beneath the skin. They feel firm or rubbery to the touch and can range from pea-sized to roughly 15 to 20 millimeters across in more severe cases.
When not inflamed, external piles may just feel like slight, soft bumps. During a flare-up, the skin stretches tighter over the swollen vein, and the area can look puffy, reddened, or slightly shiny.
Internal Piles and Prolapse
Internal piles sit inside the rectum, so you typically can’t see or feel them. They only become visible when they grow large enough to push through the anal opening, which is called prolapse. Prolapsed piles look like swollen red lumps or bumps protruding from the anus.
Internal piles are graded by how far they protrude:
- Grade 1: Bulges into the anal canal during a bowel movement but stays inside. Not visible from the outside.
- Grade 2: Pushes out of the anus during straining, then slides back in on its own.
- Grade 3: Comes out during bowel movements and has to be manually pushed back in with a finger.
- Grade 4: Stays outside the anus permanently and cannot be pushed back in.
The mucosal surface of a prolapsed internal pile has a moist, pinkish-red appearance, distinct from the drier skin surrounding the anus. The folds on prolapsed piles run in a radial pattern, like spokes on a wheel. This is one way doctors distinguish them from rectal prolapse, which produces circular, ring-like folds.
Thrombosed Piles
A thrombosed pile is one that develops a blood clot inside it. It appears suddenly as a firm, painful lump at the rim of the anus with a distinctive purple-blue or dark blue color. The discoloration comes from blood trapped and clotting within the swollen vein.
These tend to be the most alarming-looking type. The lump is usually hard rather than soft, and the surrounding skin can look swollen and discolored. Thrombosed piles are most common on the external side, where you can clearly see and feel the clot beneath the skin.
What Piles Look Like as They Heal
As a pile heals, the swelling gradually reduces and the color shifts from deep red or purple back toward normal skin tones. A thrombosed pile will slowly soften as the blood clot dissolves, typically over one to two weeks. The lump shrinks, but it often leaves behind a small flap of excess skin called an anal skin tag. These tags are soft, painless, and skin-colored. They don’t bleed or swell the way active piles do, but they can be a permanent reminder of a previous flare-up.
Piles vs. Other Anal Conditions
Several other conditions can look or feel similar to piles, which is why knowing the differences matters.
Anal skin tags are small, painless folds of skin around the anus. Unlike active piles, they don’t bleed and they don’t swell. They feel like soft flaps rather than firm lumps. Many skin tags are leftovers from healed hemorrhoids.
Anal fissures are tiny tears in the lining of the anus. They cause sharp pain and bleeding that can mimic piles, but they don’t produce lumps. A fissure looks like a small split or crack in the tissue, and it’s usually only visible during a close examination. Piles, by contrast, are more likely to create noticeable swelling around the anus.
Rectal prolapse can look like a large prolapsed pile, since both involve tissue protruding from the anus. The key visual difference is the fold pattern: rectal prolapse has circular, concentric rings of tissue, while prolapsed piles have radial folds. Rectal prolapse also tends to involve a larger, more uniform mass of tissue.
When Appearance Signals Something Serious
Most piles are flesh-toned, pink, or mildly reddish. A sudden shift to dark blue or purple usually signals a blood clot. While thrombosed piles are painful, they’re not dangerous in most cases and resolve on their own. However, any new lump around the anus that is black, irregularly shaped, or accompanied by persistent bleeding that doesn’t match typical pile symptoms warrants a medical evaluation. Rectal bleeding can also be caused by conditions unrelated to piles, so getting a clear diagnosis is important if you’re unsure what you’re looking at.