On the non-identity of the parasites met with in Favus, Tinea Tonsurans, and Pityriasis Versicolor : including, proofs derived from the occurrence of these diseases amongst the lower animals, and their transmission from them to man / by Dr. M'Call Anderson.

  • Anderson, McCall, 1836-1908.
Date:
1866
Catalogue details

Licence: Public Domain Mark

Credit: On the non-identity of the parasites met with in Favus, Tinea Tonsurans, and Pityriasis Versicolor : including, proofs derived from the occurrence of these diseases amongst the lower animals, and their transmission from them to man / by Dr. M'Call Anderson. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

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    -5 But, before proceeding further, it may be well to state that, as there is a difference of opinion amongst those der- matologists who admit a group of parasitic affections of the skin, as to whether alopecia areata (porrigo decalvans) is a parasitic disease or not, it is advisable to leave that affec- tion out of consideration in the present discussion in order to avoid confusion. So that the task which, I propose to myself now is to lay before ray readers the arguments in favour of the view that the TricopJnjton^ the parasite met with in the three varieties of ringworm (viz., herpes ton- surans, herpes circinatus, sycosis parasitica), the Achorion Schdnleinij the parasite of favus, and the Microaporon furfur^ the parasite of pityriasis versicolor, are not identical, but distinct fungous growths. First of all, let us view tlie proofs of non-identity, as these are displayed in the results of inoculation. (1.) Results of inoculation with the Achorion Schonleini (the parasite of favus).—This parasite has been repeatedly inoculated with success, and, amongst others, by Hebra, R^makj'Vogel, Bazin, Gruby, Kobner, and Deffis. Bennett thus describes a case in point:— In the summer of 1845 one of the gentlemen in attendance at the Koyal Dispensary volunteered to permit his arm to be inoculated. A boy, called John B—, aged eight, labouring under the disease (favus) was at the time the siibject of lecture, and a portion of the crust, taken directly from this boy's head, was rubbed upon Mr. M—'s arm, so as to produce erythematous redness, and to raise the epidermis. Portions of the crust were then fastened on the part by strips of adhesive plaster- The results were regularly examined at the meetings of the class every