The new three-tiered AKN classification system is based on scalp distribution, primary morphology, and association with either folliculitis decalvans or dissecting cellulitis.

A new classification system aims to improve the way that Acne Keloidalis Nuchae or AKN is treated.

AKN can begin as tiny bumps on the back of the head, typically following a close haircut. However, due to a patient's genetic predisposition, these lesions become unremitting and expand.

Due to the variation in AKN, researchers out of Harbor-UCLA Medical Center in Los Angeles proposed a standardized objective classification system to help reliably predict the quality of treatment outcomes by pairing patients with the most appropriate and optimal therapeutic methods.

Data from 108 AKN patients was used to create the three-tiered AKN classification system based on scalp distribution, primary morphology, and association with either folliculitis decalvans or dissecting cellulitis. The study appears in the Journal of Clinical Aesthetic Dermatology.

What's more, the study provided new disease insights, including a significant incidence of AKN in Hispanic men (37%) contrary to the conventional belief that it is primarily a disease of people of African descent. It also established that although AKN exhibits some keloid-like behaviors, it is not a true keloid. Furthermore, men of African descent tended to develop keloid-like masses compared to other racial groups. Finally, it was found that AKN is strongly associated with folliculitis decalvans.