Background: Acne mechanica (AM) is common in football players. Severe
cases of nuchal AM map precede acne keloidalis nuchae (AKN). Factors t
hat may be associated with the progression of nuchal AM to AKN are unk
nown. The prevalence of AKN in football players has not been reported.
Objective: We investigated the frequency of nuchal AM and AKN within
a susceptible population and attempted to identify factors that may be
associated with AKN. Methods: Four hundred fifty-three high school, c
ollegiate, and professional football players were examined for the pre
sence of nuchal AM or AKN. Those with positive findings completed a qu
estionnaire regarding their disease. Results: Nuchal AM was more preva
lent in high school players (15.5%) than older players (1.2%). AKN was
more frequent in players beyond the high school level and was found e
xclusively in blacks. AKN was not associated with a positive family hi
story of AKN nor a positive personal or family history of keloid forma
tion. Conclusion: AKN occurs almost exclusively in blacks. The level o
f football play may be associated with the development of AKN. Positiv
e family history of AKN and positive family or personal history of kel
oids is not associated with AKN development.