"They appear as small, red, painful or itchy bumps that can develop pus-filled heads," says the expert. This scalp condition is typically benign, according to research published in StatPearls in 2023.

legs and the scalp (just to name a few spots!). What it looks like: small purple or red irritated bumps on the scalpand in some cases, hair loss. It can manifest differently on other parts of the ...