Open AccessAdamson′s Fringe, Horatio George Adamson, and Kligman′s experiments and observations on Tinea capitis
Author(s) -
Rajiv Joshi
Publication year - 2011
Publication title -
international journal of trichology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.494
H-Index - 22
eISSN - 0974-9241
pISSN - 0974-7753
DOI - 10.4103/0974-7753.82120
Subject(s) - hair follicle , tinea capitis , cuticle (hair) , keratin , inner root sheath , george (robot) , dermatology , outer root sheath , biology , art , medicine , anatomy , art history , pathology , microbiology and biotechnology
Adamson's fringe is located at the upper margin of the keratogenous zone of the hair follicle where the nucleated hair shaft cornifies completely and gets converted to hard anucleated keratin. It marks also the area of complete keratinization of the cuticle and Henle's layer of the inner root sheath and the beginning of the stem of the follicle. In Tinea capitis, dermatophytic infection of the hair shaft is restricted to this zone and the fungi do not penetrate further down the infected hair in the bulb of the follicle. The fungi in Adamson's words form "a fringe of mycelium surrounding the hair shaft and project below the lower margin of the sheath of spores around the root-stem." Horatio George Adamson (1865--1955), a British dermatologist first described this phenomenon, in 1895, and this article describes Adamson's fringe with a short biography of Adamson and discusses Kligman's experiments and observations on Tinea capitis which validated the observations of Adamson and the concept of Adamson's Fringe and described the pathogenesis in Tinea capitis.