Volume 1

Pathology and therapeutics of the domestic animals / by Dr. Freidberger ... and Dr. Fröhner ... Tr. from the most recent ed., with annotations by Prof. W.L. Zuill ... Together with selections from the notes of the French translators, and also from those of Prof. Trasbot.

Friedberger, Franz, 1839-1902.

Date:: 1895

Credit: Pathology and therapeutics of the domestic animals / by Dr. Freidberger ... and Dr. Fröhner ... Tr. from the most recent ed., with annotations by Prof. W.L. Zuill ... Together with selections from the notes of the French translators, and also from those of Prof. Trasbot. Source: Wellcome Collection.

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$The principal indications in treatment are the softening of the scabs, their removal, and injections of glycerin of cresolated or car- bolated oil in the external ear (2 to 5 per cent.). Addendum. Mange of the Ferret. We observe a sareoptic and symbiotic mange on this animal.' FOLLICULAR MANGE. Follicular mange, which is frequent in the dog and cat, less fre- quent in the pig (Csokor) and ox (Grimm), has sometimes been observed in the sheep (Oschatz), the goat (v. Niederhausern), the stag (Prietsch), even upon the bat, rat (Hahn), and field mouse (Zschokke). It is produced by the Demodex folliculorum. This acarus exists frequently in the comedones of man’s face, (dilated sebaceous glands), without producing any morbid phenomenon. Natural History. Demodex folliculorum was discovered in 1843 by Henle and Simon in the comedones of man. At the same time Tulk found it upon the dog. It is a parasite of the group of Arthropodes, belonging to the family of the Dermatophiles, the order Acari and class Arachnides. At the present date we dis- tinguish several varieties. Demodex folliculorum, var. canis, cati, suis (also designated under the name of Demodex phylloides by Csokor), hominis, etc. In the adult state the Demodex folliculorum is a vermiform para- site, shaped like a laurel leaf and one-third to one-quarter of a milimetre in length ; it comprises three parts : the head, thorax, and abdomen, the first two being joined in a single organ. The I {^Sareoptic mange, which is determined by Sarcoptes scabiei, var. hydrochceri, is at times localized on the head and feet, at other times it is spread over the whole body. It is indicated by a gelatinous pitchy oozing, by dépilations, grayish or brownish scabs and an intense pruritus. When the disease is old the parasites are often accu- mulated upon the ears and feet, on the base of the paws, which become deformed and acquire enormous dimensions. Symbiotic mange (auricular acariasis) is produced by Symbiotes auricularum, var. furonü. In the generality of cases its spread is so insidious that the troubles produced by it pass unnoticed. We may, however see the patients scratch their ears; we re- mark also an unusual weakness, depression, and torpidity, but the epileptiform symptoms observed in auricular acariasis of the dog and cat are exceptional in the ferret. As soon as the parasites exist in large numbers they produce violent inflammatory phenomena, destruction of the tympanic membranes, lesions of the middle ear, caries of the internal ear, or a fatal meningo-encephalitis.]$