However, when these pimples evolve into permanent keloids on the back (nucheal) scalp they are characteristic of folliculitis keloidalis
nuchea (FKN), also commonly and incorrectly called acne keloidalis nuchea, which has a prevalence of 10.5% in males and 0.1% females aged >18 years.
nuchae (FKN), also incorrectly called acne keloidalis, is shaving-bump-like keloids on the back of the head (Fig.
Acne keloidalis, also known as folliculitis keloidalis
is a chronic inflammatory process of the hair follicles of the nape and leading to hypertrophic scarring as papules and plaques.