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Cherry Angioma
A cherry angioma is a small, bright-red, smooth bump that often appears on the trunk, arms or shoulders in adulthood. It is a vascular lesion, not a pigment spot, which means it comes from blood vessels rather than melanin. Cherry angiomas are benign and very common, and they are harmless.
Why it looks so red
A cherry angioma is a small cluster of capillaries, the finest blood vessels in the skin, that have multiplied and dilated in the upper layer of the dermis. Its cherry-red colour comes directly from the hemoglobin in the blood inside those vessels, not from pigment. When you press on it, it briefly goes pale because blood is pushed out, then refills, a simple sign of its vascular nature.
What causes cherry angiomas?
The exact cause of cherry angiomas is not fully understood, but a few factors are clearly involved. They tend to run in families, suggesting a genetic predisposition, and they are strongly linked with age, appearing in adulthood and increasing in number over the years. Certain hormonal shifts can also favour their development in some people.
Genetic predisposition
Cherry angiomas often appear in several members of the same family, which points to an inherited tendency. If close relatives have many of them, you may be more likely to develop them too. This predisposition does not mean every angioma is identical, but it helps explain why some people form many while others form very few over a lifetime.
The link with age
Age is one of the most consistent factors. Cherry angiomas are uncommon in childhood and typically begin to appear from early adulthood, becoming more numerous with each passing decade. As the small vessels of the upper dermis change over time, new clusters can form. This is why they are sometimes considered a normal part of how skin evolves with age.
Hormonal shifts
Periods of significant hormonal change, such as pregnancy, can favour the appearance of new cherry angiomas in some people. Hormones influence many aspects of how blood vessels behave, and these shifts may encourage small clusters of capillaries to form or become more visible. The effect varies from one person to another and does not occur for everyone.
Friction and minor trauma
Because a cherry angioma is essentially a small bundle of blood vessels, it can bleed if it is caught, scratched or rubbed, for example by clothing or jewellery over a spot that is frequently irritated. Friction does not cause the lesion itself, but it can draw attention to one and make it more bothersome in daily life.
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