Medically reviewed by Susan Bard, MD Key Takeaways Scalp folliculitis, acne keloidalis nuchae (AKN), and acne cosmetica are ...

There you were, innocently rubbing your head or brushing your hair, when all of a sudden, ouch: You hit some kind of weird little bump and it seriously hurts. Similar to the bumps that can form on ...

Dermatologists explain the common symptoms of an unhealthy scalp, as well as how to treat it.