Those small red dots that appear on the skin—flat or raised, isolated or clustered—are one of the most common reasons people consult a dermatologist or search for answers online. Their causes range from entirely benign to conditions requiring prompt medical attention. Here is what the science says about the most frequent explanations.
En bref
- —At least 11 distinct conditions can cause red dots on skin
- —Cherry angiomas are harmless and linked to aging after 30
- —Petechiae may signal low platelets or infection if widespread
Cherry angiomas: the most common red dot after age 30
Cherry angiomas are among the most frequently encountered red spots on adult skin. They appear as bright red, round marks measuring between 1 and 5 millimetres, either flat against the skin or very slightly raised. Their distinctive colour comes from clusters of dilated capillaries just beneath the surface.
