Red spots on the skin can be caused by various factors, ranging from harmless to signs of underlying health issues. This ...

"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.

Most often, bedbugs leave bites on the arms, legs and back — whatever ... These bites look like raised red bumps. Mosquitoes leave itchy bumps on the skin that may swell and become red.