Folliculitis is a common skin condition that occurs when hair follicles become inflamed due to infection, irritation, or blockage. The most frequent cause is a bacterial infection, though fungi and ...
Scalp folliculitis, acne keloidalis nuchae (AKN), and acne cosmetica are among several causes of pimple-like bumps on the scalp. Acne cosmetica results from hair products containing oil and typically ...