Skin tags are harmless, skin-colored growths says ... Sebaceous cysts are slow-growing, closed bumps that remain under the skin. They can be caused when a gland or its duct becomes damaged or ...

“Milia are never inflamed,” says Dr. Akhavan, meaning they won’t get red like acne or a stye. “They’re just dome-shaped, non-inflamed bumps filled with keratin. There’s no pus or inflammation or ...