Red, raised bumps, accompanied by skin darkening is what ingrown hair cysts look like. These can be infected, and pus-filled, ...
The wound, caused by an ingrown hair ... works its way in under the skin. However, there is no enzyme to break down the hair and it becomes the focus of infection. Pilonidal cysts affect 26 ...
BACKGROUND: Vellus hair cyst is an uncommon developmental abnormality of the vellus follicle histologically defined as a stratified squamous epithelial-lined cyst containing one or more vellus hairs.