Small red bumps on the skin might be cherry angiomas. These are clusters of tiny blood vessels. They are harmless and common ...

4. Boils Boils are painful, red bumps caused by bacterial infections in hair follicles or oil glands. They often develop in areas prone to friction, such as the neck or thighs.

These are red, swollen bumps that are part of an allergic reaction, Dr. Jaliman explains. What causes hives: You may get hives if you’re reacting to a bee sting, a food, or a medication, Dr ...

Cherry angiomas get their bright red color from blood, but will occasionally turn into dark red moles on the skin when blood cells get clogged up. Still, they are not harmful, Dr. Durham says.