[3] It ranges between 0.5 – 6 mm in diameter and usually several are present, typically on the chest and arms, and increasing in number with age.

Cherry angiomas are made up of clusters of capillaries at the surface of the skin, forming a small round dome ("papule"),[5] which may be flat topped.

[citation needed] As they grow larger, they tend to expand in thickness, and may take on the raised and rounded shape of a dome.

[5] One study found that the majority of capillaries in cherry hemangiomas are fenestrated and stain for carbonic anhydrase activity.

[8] The study found that the level of microRNA 424 is significantly reduced in senile hemangiomas compared to normal skin resulting in increased protein expression of MEK1 and cyclin E1.

A study published in 2019 identified that somatic mutations in GNAQ and GNA11 genes[9] are present in many cherry angiomas.

[16] A significant increase in the density of mast cells has been seen in cherry hemangiomas compared with normal skin.

If they are cosmetically unappealing or are subject to bleeding angiomas may be removed by electrocautery, a process of destroying the tissue by use of a small probe with an electric current running through it.