It is remarkable that since Dubreuilh's1 original report there has been so little investigative study of this exceedingly common disorder; not even a name has been agreed upon. Among the terms used by previous writers are pili incarnati,2 folliculitis barbae traumatica,3 and chronic scarring pseudofolliculitis of the Negro beard,4 but in common dermatological parlance it is probably oftenest referred to as chronic sycosis barbae, a designation which is both inaccurate and misleading. "Pseudofolliculitis of the beard" seems an apt name and will be used henceforth in this paper.
The disease is usually considered to be peculiar to the Negro, and in fact in its severe forms it is essentially restricted to this race (Fig. 1A). It is rare in Caucasians and usually far less severe, sometimes with only a few scattered lesions. The characteristic lesions are erythematous firm papules and
STRAUSS JS, KLIGMAN AM. Pseudofolliculitis of the Beard. AMA Arch Derm. 1956;74(5):533–542. doi:10.1001/archderm.1956.01550110077016