Red little dots on arm?

NuA

New member
I've been having little red dots on my arms. When i scratch one it fades away then comes back, it looks like its blood from under the skin. They are very small you can't really see them but theres many. I've had this for around 3 years if not more and I'm only 19. I've noticed after I wax I have more.
Does anyone know what exactly this is?
Thanks
 
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