The infrequently encountered, specifically localized, extremely chronic disease located on the back of the neck was described in 1869 by Kaposi and called dermatitis papillaris capillitii. In 1874 Bazin named it acne keloid, and in 1895 Ehrmann suggested the name folliculitis (sycosis) nuchea sclerotisans. In 1939 Sutton and Sutton and in 1946 Andrews classified it as folliculitis keloidalis; most dermatologists refer to it as acne keloid. I think the name folliculitis keloidalis chronica nuchea, though lengthy, is the most appropriate.
MacKenna1 too considered it an unfortunately named variety of folliculitis, since it is neither an acne nor a keloid in any true sense. He described it as consisting of a longitudinal band of chronically inflamed follicles, situated on the back of the neck, usually some distance below the margin of the scalp hair. He continued: "The surface and edges of this band are rugged to the eye and hard
HOLLANDER L. TREATMENT OF FOLLICULITIS KELOIDALIS CHRONICA NUCHEA (ACNE KELOID). AMA Arch Derm Syphilol. 1951;64(5):639–640. doi:10.1001/archderm.1951.01570110109018
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