A cherry angioma is a stable, slightly raised red dot that has been there for a while and is not going anywhere on its own. A blood blister appeared suddenly after a pinch or rub and will fade in a couple of weeks. Petechiae are tiny, flat, pinpoint spots that show up in groups all at once and can sometimes signal something that needs a doctor. Same color, very different things.
For the full background on cherry angiomas, see our complete guide. This page is the comparison.
Key takeaways
Same color, very different things. Identify the pattern before doing anything.
- Cherry angioma: stable, slightly raised, has been there a while, does not fade.
- Blood blister: appeared suddenly after a pinch or rub, fades in a week or two.
- Petechiae: tiny, flat, pinpoint spots that appear in groups all at once.
- A fresh spray of petechiae, especially with fever or unexplained bruising, is a same-day call to your doctor.
- Any spot that bleeds on its own, is changing, or does not match your other red dots is a dermatologist conversation.
Cherry angioma vs blood blister
A blood blister is the easy one to rule out, because it has a trigger.
Blood blister. Forms after a specific injury, usually a pinch, a friction rub, or a sudden bump. The skin lifts up into a small dome that contains pooled blood underneath. It appears within minutes to hours of whatever caused it, sits in the exact spot of the injury, and fades and resolves on its own over a week or two. If you can name the moment it appeared, it is almost certainly a blood blister.
Cherry angioma. Did not appear from an injury. Has been there for weeks, months, or longer. Stays the same size and color over time. Does not fade. Is built into the skin rather than sitting on top of it.
If you remember when and how it happened, it is a blood blister. If you noticed it one day and cannot recall it ever not being there, that is the cherry-angioma pattern.
Cherry angioma vs petechiae
Petechiae are the most important one to recognize, because a fresh crop can sometimes mean something a doctor should know about.
Petechiae. Tiny, flat, pinpoint red or purple spots, each one usually smaller than the head of a pin. They are caused by minor bleeding under the skin from broken capillaries. The two giveaways: they are flat against the skin, not raised, and they appear in groups, often dozens at once over a small area, and often suddenly. They also do not blanch when you press them, but that test alone is not enough.
Cherry angioma. Bigger than petechiae individually, slightly raised in most cases, and they are individuals rather than a spray. You typically have a handful spread over a wider area, accumulated over years, not clustered tightly together.
When petechiae need a doctor. A new spray of petechiae, especially with other symptoms like a fever, unexplained bruising, or fatigue, is worth a same-day call to your doctor. Petechiae can be from minor things like a hard cough or vomiting, and they can also be a sign of something the doctor needs to evaluate. Either way, that pattern is not something to treat at home.
When to skip the comparison and just see a doctor
The point of this page is to help you recognize the common pattern. The point is not to talk you out of getting a professional look at something that is acting weird.
Book a dermatologist if any spot bleeds on its own without contact, is growing or changing, has changed color, has an uneven border, or simply does not look like your other red dots. Book your regular doctor (not a dermatologist) if you have a new spray of tiny pinpoint spots alongside any other new symptom. Identifying skin marks is what these professionals do, and there is no rush that justifies treating something you have not identified.
See a doctor if
- You see a fresh spray of tiny pinpoint spots, especially with fever, unexplained bruising, or fatigue. Same-day call.
- A red spot bleeds on its own with no contact or scratching.
- A spot is growing, changing shape, or has an uneven border.
- A spot has changed color, especially toward brown or black.
- A blood blister is unusually large, painful, or has not started to fade after two weeks.
- You are not 100% sure what a spot is.
For broader context, how clinicians describe vascular lesions covers the technical distinctions in plain medical language.
What about other things people compare cherry angiomas to?
Two more worth a quick word.
Spider angioma. A small central red dot with thin red vessels branching out from it, like a fine web. A cherry angioma is a solid dot with no branching. If you see legs coming off the spot, it is a spider angioma.
A mole. Cherry angiomas are red and made of blood vessels. A mole is brown or tan and made of pigment cells. Genuinely different things. For a pigmented brown or black spot, that is a dermatologist conversation, not an at-home device.
Related questions
For the full picture on cherry angiomas, including causes and what to do about them, see the complete cherry angioma guide. For the step-by-step at-home removal guide once a spot is confirmed, see the cluster article. For why a cherry angioma bleeds and what to do about it, see the related cluster. For why several appear at once, see the sudden-onset breakdown.
The short version: identify the pattern, then decide. Most of the time it is exactly what it looks like. The few cases where it is not are the ones worth a professional look.
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See the Plasma Pen