Cherry angiomas are one of the easier things to recognize. They are small, they are the same bright red as each other, and they do not change much once they have formed.
On brown and Black skin, cherry angiomas often look deep purple, plum or nearly black rather than bright red, which makes them easier to mistake for a mole. Pressing on one and seeing it lighten slightly, and the way it bleeds freely if nicked, are more reliable clues than colour. Removal methods that use heat or freezing carry more risk of leaving a pale or dark mark on darker skin, so lasers set for the vessel are often the better choice.
A red bump that does not fit this description belongs in Lookalikes, near the bottom of this page.
A cherry angioma forms when a small group of capillaries — the tiniest blood vessels — grows and clusters into a tight knot near the skin's surface. That knot of vessels is what you see as the red dot. Researchers have found consistent genetic changes in the cells lining those vessels, which explains the growth, but not why one appears in one spot rather than another.
Age is the strongest factor. They become steadily more common from about age 30 onward, and by the seventies most people have many. Family history matters, and pregnancy can bring on a batch, which points to hormones playing a part. Some people develop a sudden crop after certain chemical exposures or with certain medications, though this is uncommon.
What does not cause them: sunlight, diet, poor circulation, toxins, or liver disease. That last one comes up constantly online and it confuses cherry angiomas with spider angiomas, which are a different lesion with a central dot and radiating legs and which genuinely can be linked to liver problems. Cherry angiomas carry no such association.
There is no at-home treatment for a cherry angioma, and one popular option is worth naming specifically so you avoid it.
Most cherry angiomas never need a visit. Go if:
What the visit gets you: someone looking at it with a dermatoscope, which usually settles the question in seconds without cutting anything; a biopsy if it does not; and removal in the same appointment if you want it.
A typical cherry angioma is diagnosed by looking, and needs no test at all.
Dermoscopy is the one that changes things. A handheld magnifier with a light is placed on the skin, and a cherry angioma shows a very characteristic pattern of red or purple lagoons — well-defined pools of colour. That pattern is distinctive enough to separate it from a mole, a pyogenic granuloma or an amelanotic melanoma in most cases, without any procedure.
A skin biopsy is done when dermoscopy does not settle it, or when the lesion is growing, ulcerated or bleeding repeatedly. Because the lesion is made of vessels, a shave biopsy is usually done with cautery to control the bleeding, and the sample is examined under a microscope. This is the test that definitively rules out amelanotic melanoma. It is done rarely, and only when the answer would change what happens next.
Removal is quick, usually one session, and almost always cosmetic. The method should be matched to the angioma and to your skin tone, because that is what decides whether you are left with a clean result or a mark.
Nothing happens. They stay the same size and colour for decades. You will most likely acquire more over time, which is normal and not a sign of anything.
The spot turns grey, dark purple or slightly bruised straight away, then scabs or fades over one to two weeks. Most single angiomas need one session. A few need a second.
A small scab forms and comes off over one to two weeks. Keep it covered and moist while it heals. The skin underneath is often slightly pink for a month or two.
Usually a flat spot that blends in within a few months. Sometimes a small pale or slightly darker mark stays, and that risk is higher on brown and Black skin. Small scars are possible with any method that cuts or burns.
Removal is permanent for that angioma — they do not come back in the same spot. But it does nothing to stop new ones forming elsewhere, and most people continue to get more with age.
Cherry angiomas cause almost no problems. They are benign, they stay benign, and they do not need monitoring.
Most red bumps are cherry angiomas. These are the ones worth telling apart.