Psorospermosis follicularis cutis : a clinical lecture, delivered at the New York Post-Graduate Medical School and Hospital, October 8, 1890 / by L. Duncan Bulkley.

  • Bulkley, Lucius Duncan, 1845-1928.
Date:
1890
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Licence: Public Domain Mark

Credit: Psorospermosis follicularis cutis : a clinical lecture, delivered at the New York Post-Graduate Medical School and Hospital, October 8, 1890 / by L. Duncan Bulkley. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    vegetante), and, as already mentioned, in the plugs from the case now before you. The exact nature of these bodies has not yet been fully determined. Darier believes them to be true para- sites.belonging to the order of sporozoaires, which are uni- cellular organisms belonging to the animal kingdom, and a subdivision of the protozoaires. This class includes (i) the gregarinjE, (2) the oval psorospermae or coccidiae (which is the one found in this disease), (3) the sarco- sporidiae, {4) the psorosperms of fishes or myxosporidiae, and (5) the psorosperms of the articulates, or micro- sporidiae. All these organisms live as parasites on other animals, and in certain cases give rise to fatal maladies. The coccidiae, which alone interest us here, live almost exclusively in the epithelial tissues of vertebrates, where they are found even in the interior of the cells. They are distinguished from the other groups of sporozoaires, and especially from the gregarinas, by several charac- teristics, such as the absence of movement at any period of their development, their intracellular location, their solitary encystment, and the relatively small number of spores formed in the cysts. The ovoid coccidia produce cysts in the biliary ducts of the rabbit, and in the human liver and ureters’ psorosperm cysts have been observed. Before going further into the subject, and making what I hope will be practical suggestions, allow me very briefly to give the chief facts of the nine cases of this peculiar disease to which I have thus far found reference (includ- ing Dr. Morrow’s and my own, and also three briefly alluded by Dr. Boeck, of Norway).^ I. (Fournier, Darier, Thibault.) Male, aged forty-two years, a bookbinder, affected for seven or eight years; the disease beginning at first insidiously, increased more ’ Journ. of Cutan. and Genito-urinary Diseases, 1889, p. 318. 5 Boeck: Monatshefte fiirprakt. Derm., Bd. xi. No. 3,p. 132.