External hemorrhoids appear as swollen lumps on or around the anus, ranging from flesh-colored soft bulges to firm, bluish-purple knots depending on whether a blood clot has formed inside. They sit at the anal opening rather than inside the canal, which means you can often see or feel them directly.
General Appearance
An uncomplicated external hemorrhoid looks like a round, bulging mass just outside the anus. It has a broad base, meaning it connects to the surrounding skin without a narrow stalk. The surface is smooth and the lump feels somewhat firm and swollen. In many cases, dilated veins are visible beneath the skin, giving the area a faint bluish tint even before any clotting occurs.
Size varies widely. Some external hemorrhoids are barely noticeable, just a slight puffiness you’d only detect by touch. Others swell to the size of a grape or larger. They aren’t always visible at rest but become more prominent during straining, sitting for long periods, or after a bowel movement. You might notice one lump or several clustered around the anal opening.
What a Thrombosed Hemorrhoid Looks Like
When a blood clot forms inside an external hemorrhoid, the appearance changes dramatically. The lump turns a distinct blue-purple color and becomes noticeably harder and more swollen. Depending on your skin tone, it can appear dark blue, purple, grey, black, or dark brown. The clot creates a tense, painful knot that doesn’t flatten when you press on it and doesn’t retreat back inside the body.
A thrombosed hemorrhoid is one of the more alarming-looking things you’ll find on your body, but it’s not dangerous in most cases. The intense color comes from trapped, deoxygenated blood pooling under the skin. The lump is typically well-defined with clear borders, and touching it usually causes sharp pain, especially when walking, sitting, or standing.
How They Change Over Time
External hemorrhoids don’t stay the same size day to day. During flare-ups, they swell and become more visible, sometimes feeling warm or tender. Between episodes, they may shrink enough that you can barely see them. If a thrombosed hemorrhoid resolves on its own, the clot gradually reabsorbs over one to three weeks. The purple color fades, the firmness softens, and the pain eases.
After healing, a deflated hemorrhoid sometimes leaves behind a small flap of excess skin called an anal skin tag. These tags are soft, pliable, and flesh-colored. They hang loosely, often attached by a narrow stalk, and don’t hurt. They’re essentially leftover stretched skin from the swelling and are harmless, though they can make cleaning the area more difficult.
External Hemorrhoids vs. Prolapsed Internal Hemorrhoids
This distinction matters because the two can look similar from the outside, but they behave differently. An external hemorrhoid originates from the skin around the anus. A prolapsed internal hemorrhoid is tissue from inside the anal canal that has pushed outward, and it often has a redder, wetter appearance because internal tissue is lined with mucous membrane rather than regular skin.
Prolapsed internal hemorrhoids also tend to slide back inside on their own or can be gently pushed back in. External hemorrhoids stay put because they’re part of the outer skin and don’t retract. If you notice a lump that appears during a bowel movement and then retreats afterward, that’s more likely a prolapsed internal hemorrhoid than an external one.
What External Hemorrhoids Don’t Look Like
Several other conditions can cause lumps near the anus, and telling them apart visually helps you know what you’re dealing with.
- Anal skin tags are soft, smooth, and flesh-colored with an irregular shape. They hang from a narrow stalk and feel loose and painless. External hemorrhoids, by contrast, have a broad base, feel firm or swollen, and appear as a round bulge rather than a dangling flap.
- Anal warts are flesh-colored and irregularly shaped with a rough, bumpy surface. They often appear in clusters. Hemorrhoids are more uniform in shape, typically a single rounded lump (or a few discrete lumps), and have smooth skin over them.
Color is one of the most reliable visual cues. Anal warts and skin tags stay close to your natural skin color. Active hemorrhoids often show visible veins or take on a reddish, bluish, or purple tone, especially when swollen or clotted.
Signs That Need Attention
Most external hemorrhoids are uncomfortable but not medically urgent. However, certain visual signs point to something that needs evaluation: any rectal bleeding (even small amounts), a lump that turns very dark or black, pain so severe it limits your ability to sit or walk, or symptoms that persist beyond two weeks of home care. Dizziness or lightheadedness alongside bleeding suggests significant blood loss and warrants prompt attention.