File:The British journal of dermatology (1888) (14780969072).jpg

Identifier: britishjournalof34brit (find matches)
Title: The British journal of dermatology
Year: 1888 (1880s)
Authors: British Association of Dermatology
Subjects: Dermatology Syphilis
Publisher: London H.K. Lewis (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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twards,forming the characteristic nodules. This method of growth explainswhy the hair is so little affected; the deeper layers of the cortex, themedulla, and the root of the hair are not involved, though the hair attimes loses its lustre. In an early stage of the infection the cuticle andsome fibres of the cortex may be seen to be raised in ridges, which \ 262 OBSERVATIONS ON TRICHOMYCOSIS AXILLARIS. run in wavy lines across the shaft of the hair transversely to its longaxis ; masses of the fungus may be seen growing under these ridges.A nodule consists of a mass of the rod-like hyphge of the Nocardiaembedded in a firm homogeneous ground substance. In the black andred varieties the nocardial masses are surrounded by large numbersof cocci—Micrococcus niyrescens in the case of IVichomycosis nigra andM. castellanii in the case of T. riihra. Symptomatology. TrIchoviycostsJlaca.—The affected hairs of the axilla and pubespresent nodular formations of a yellow, and, occasionally, yellow-
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FiG. 3.—Nodule of trichomycosis uigra, cleared specimen. Note bacilliformliypha3 of nocardia tennis and masses of cocci (Micrococcus nigrescens). greyish colour, plainly visible to the naked eye, of rather soft con-sistency in the tropics, being easily removed by scraping with a tri-angular needle or any similar instrument (Coloured Plate: 3,and Fig. 1).The nodules are much harder and generally of much smaller size intemperate zones, so much so that at one time one of us considered thatthere were two distinct clinical varieties of trichomycosis flava—thetropical variety, characterised by the nodules being lat-ge, soft, andeasily removed, and the European variety or lepothrix, seri^ii stricto,characterised by the nodules being hard, small and difficult to remove.The microscopical examination of cleared specimens shows the OBSERVATIONS ON TRICHOMYCOSIS AXILLARIS. 263 formations to consist solely of enormous numbers of bacillary-like bodies—the rod-like hypliaj of Nocardia tenuis,

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