Acne Keloidalis Nuchae (AKN)
Persistent (and potentially embarrassing) bumps that are most often located on the back of the neck are called AKN. There are several reasons why they occur but the most likely is that, like PFB, the growing hair curves inward and punctures the skin. Also, it is the back of the neck where men shave more often and most closely. When hair is “faded” the desired look is for the hair on the back of the neck to be cut the closest, to be faded into the rest of the skin. The trauma of the close shave may contribute to AKN. In addition, when brothers give themselves a shape-up, they often accidentally cut the area on the back of the neck. These nicks and cuts in the skin most likely contribute to AKN.