Spider angioma

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What Wikipedia says

A spider angioma or spider naevus (plural: spider naevi), also nevus araneus, is a type of telangiectasis (swollen, spider-like blood vessels on the skin) found slightly beneath the skin's surface, often containing a central red spot and deep reddish extensions (see Blood color) which radiate outwards like a spider's web or a spider's legs.

Excerpt from the Wikipedia article “Spider angioma”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Herbert L. Fred, MD and Hendrik A. van Dijk, CC BY 2.0, via Wikimedia Commons.