Cherry Hemangiomahttps://en.wikipedia.org/wiki/Cherry_angioma
Cherry Hemangioma is a small, bright red bump on the skin. It ranges from 0.5 to 6 mm in diameter, appears on the chest and arms, and increases in number with age.

Cherry hemangioma is a harmless, benign tumor and has no relationship to cancer. It is the most common type of angioma and becomes more prevalent with age, occurring in nearly all adults over 30 years.

Treatment
Treatment is usually not required, but lesions can be easily removed with laser surgery if desired.

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  • Cherry Hemangioma ― Arm; It is a small hemangioma that commonly occurs on the arms and trunk and is caused by aging.
    References Cherry Hemangioma 33085354 
    NIH
    Cherry hemangiomas are common benign cutaneous vascular proliferations. They are also known as cherry angiomas, adult hemangiomas, or senile angiomas as their number tends to increase with age.