Cherry Angioma Genetics: Family History and Risk Factors

The Short Answer

What runs in families is the tendency to develop them — largely through inherited skin type, colouring and ancestry. The lesions themselves are not passed down. Each one arises from a mutation that occurs in a single skin cell during your lifetime, which is why they appear gradually from your thirties onwards rather than being present from birth.

This distinction is not academic. It is the difference between a condition you can be tested for and one you cannot.

What Happened When Researchers Sequenced Them

In 2019 a group at Massachusetts General Hospital took ten cherry angioma specimens and ran them across a panel of 323 genes. Five of the ten carried activating missense mutations in GNAQ or GNA11 — at the hot spots Q209 and R183.

Two things about that result matter to a patient.

First, the mutations were somatic. They were present in the lesion tissue and not in the person’s inherited genome. The mutation happened in one cell in one piece of skin, that cell multiplied, and the result is the red dot you can see. Your parents did not give it to you and you cannot pass that particular lesion on.

Second, the same hot spots turn up elsewhere. GNAQ and GNA11 mutations at these positions are known drivers in port-wine stains, Sturge–Weber syndrome, congenital and anastomosing haemangiomas, and — at the same codons — in blue naevi and uveal melanoma.

That last item reads alarmingly and should not. The same gene switch produces entirely different outcomes depending on which cell type it happens in and what else that cell is carrying. A shared mutation is not a shared disease. Cherry angiomas do not become melanomas, and nothing in this study suggests they do. What it does establish is that these lesions are a genuine clonal growth with an identifiable driver, rather than the vague “ageing capillaries” explanation that most pages offer.

The honest limitation: ten specimens is a small series, and half of them showed no mutation on this panel at all. This is a real finding, not a settled account of how every cherry angioma forms.

Source: Klebanov N, et al. Use of targeted next-generation sequencing to identify activating hot spot mutations in cherry angiomas. JAMA Dermatol. 2019;155(2):211–215. PMID 30601876.

Why There Is No Genetic Test

This follows directly. A genetic test reads the genome you were born with, taken from blood or saliva. A somatic mutation is not in that genome — it is confined to the lesion. Sequencing your blood would find nothing, because there is nothing there to find.

The only way to detect the mutation is to remove the lesion and sequence the tissue, which is a research procedure. It changes no decision: the diagnosis is made by looking, and the treatment does not vary by mutation status.

If a service offers to test you for a cherry angioma predisposition, there is no established basis for it.

So What Does “It Runs in My Family” Mean?

Something real, just not what the phrase implies. A large-scale imaging study of the general population found that the number of cherry angiomas a person carries tracks with several inherited characteristics:

• Age — number and size both increase with it, consistently and by far the strongest factor.
• Fair skin rather than medium or olive.
• Green or hazel eyes compared with blue or grey.
• Caucasian ancestry other than British or Irish alone.

Every one of those is inherited. So families share the tendency because they share the colouring and the ancestry — not because a cherry angioma gene is being handed down.

The same study also mapped where they sit: the front of the trunk is the commonest site, then the back. Interestingly, although men carried more overall, women had more on the legs.

Source: Betz-Stablein B, et al. Anatomic distribution of cherry angiomas in the general population. Dermatology. 2022;238(1):18–26. PMID 34293748.

How Many Is Normal — An Actual Figure

Most pages avoid this question or invent a number. There is a real one, from the study above: 163 adults in a general population cohort had their whole skin surface imaged in three dimensions and their lesions counted by an automated classifier.

Median age of that group was 57. So for someone in late middle age, carrying a dozen or more is not unusual — it is the middle of the distribution. Half of people had more.

Treat that as context, not a threshold. There is no count above which a person becomes abnormal, and the number is far less informative than whether one lesion is behaving differently from the rest.

Where the Evidence Disagrees With Itself

Worth stating plainly, because pages that present this topic as settled are overreaching.

The Brisbane imaging study found men carried more cherry angiomas than women. A 2025 population study of 552 people aged 70 to 93 found the opposite — cherry angiomas were significantly more common in women. The two groups differed in age range and method, and both findings are published.

The practical reading is that sex is not a reliable predictor either way, and any page telling you confidently that one sex gets more of them is picking whichever study suits.

Source: Leskelä N, et al. Benign skin tumors in older persons: a population-based study. BMC Geriatr. 2025;25(1):226. PMID 40188076.

Non-Inherited Factors

Age is the dominant one, and it is not really a trigger so much as accumulated opportunity for somatic mutation.

Pregnancy is a genuine observed association — new lesions during pregnancy are common enough that it is worth mentioning, and they do not require treatment.

Beyond that, the honest position is that the aetiology is described in the literature as unknown. Chemical exposures such as bromides and mustard gas appear in case reports; those describe unusual occupational or historical circumstances and do not explain the ordinary case. Diet, vitamin deficiency and stress have no supporting evidence.

The liver-disease claim does not belong here at all. That association is with the spider naevus, a different lesion with a central feeding vessel and radiating branches — which is why telling the two apart matters more than counting either. We deal with that in full in what a sudden crop does and does not mean, which also covers the one association involving cherry angiomas that does have published support behind it.

What Any of This Changes

Clinically, very little — and that is the useful conclusion.

Family history does not alter how a cherry angioma is assessed or treated. It does not raise your risk of anything else. It does not make removal more or less appropriate, and it does not affect whether new ones appear afterwards — they will, because the process that produces them continues regardless of what has already been treated.

What family history is good for is expectation. If your parents developed a lot of these from middle age, you probably will too, and knowing that in advance is the difference between noticing a change and being frightened by an ordinary one.

Where a lesion is worth removing for appearance or because it keeps catching, the method is matched to the lesion and the skin: cherry angioma removal, £200 for the first lesion and £100 for each additional one at the same appointment.

Common Questions

Are cherry angiomas hereditary?

Not directly. The lesions are driven by somatic mutations — acquired in a single skin cell during life rather than inherited. What families share is the tendency, through inherited skin type, eye colour and ancestry, all of which are associated with carrying more of them.

Is there a cherry angioma gene?

Not an inherited one. Sequencing of lesion tissue has identified activating mutations in GNAQ and GNA11 in about half of specimens tested, but these are present only in the lesion, not in the person’s genome.

Can I be genetically tested for them?

No, and there would be no point. A genetic test reads the genome you inherited; the relevant mutation exists only within the lesion itself. Detecting it would require removing and sequencing the tissue, and the result would not change the diagnosis or the treatment.

GNAQ mutations are mentioned in melanoma. Should I be worried?

No. The same gene change produces different outcomes in different cell types, and cherry angiomas do not turn into melanoma. The overlap is biologically interesting rather than clinically alarming.

How many cherry angiomas is normal?

In a general population cohort with a median age of 57, the median count was 16 in men and 12 in women, with half of people carrying more. There is no number above which it becomes abnormal — a single lesion behaving differently from the others matters far more than the total.

Will my children get them?

Probably, if they have inherited similar colouring, but they would have developed them regardless of whether you did. Nothing you have is transmitted to them.

Can I prevent them if they run in my family?

There is no established way to prevent them. Removal treats the lesions you have; it does not change the underlying tendency, so new ones over the following years are expected.

Do men or women get more of them?

The published studies disagree. One general population imaging study found more in men; a 2025 study of people aged 70 to 93 found significantly more in women. Sex is not a reliable predictor.