File:Diseases of the dog and their treatment (1911) (14598484167).jpg

Identifier: diseasesofdogthe00ml (find matches)
Title: Diseases of the dog and their treatment
Year: 1911 (1910s)
Authors: Müller, Georg Alfred, 1851-1923 Glass, Alexander
Subjects: Horses Dogs -- Diseases
Publisher: Chicago, Ill. : Alexander Eger
Contributing Library: Webster Family Library of Veterinary Medicine
Digitizing Sponsor: Tufts University

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
and the tissue in the affected region assumes a reddish-blue color. On pressure of one of these nodular masses there exudesfrom it a purulent sanguineous fluid which, when examined under themicroscope, is found to contain numerous dermodectic acari. After thenodules empty or are evacuated, the skin becomes covered with scalesor crusts. The animal is not itchy in this condition, or if so it is in very 472 DISEASES OF THE SKIN slight degree, and not in any sense at all like the intense itchiness ofsarcoptic mange; generally the animals when scratched or rubbed in theaffected region evince pain and endeavor to get away. In case the animalshould show a certain amount of itchiness it is not at all impossible thatthe animal may have sarcoptic mange as well as dermodectic even ifall the symptoms of follicular disease are present. The pustular formof the disease seems to attack the head and neck more frequently than anyother part of the body; that is, it commences there, as a rule, and grad-
Text Appearing After Image:
Fig. 171.—Head of dog affected with demodectes foUiculorum. ually spreads from that point to other parts of the body. The diseasegoes through the phenomena of developing the nodules, accompanied byacute local inflammation of the skin. This is followed by purulentinflammation of the nodules and the discharge of a serous purulent orsanguineous fluid. The abscess gradually dries up and the skin as aconsequence of the local thickening of the cuticle becomes traversed bygrooves and fissures and is covered with crusts and scales, assuming agray-blue color in some places and copper-red in others (see Plate), andlooks like elephant hide. As the nodules dry, there is apt to be asecondary eczema, causing the animal to scratch more or less. ACARUS DEMODEX FOLLICULORUM 473 The prognosis is generally unfavorable, as it is almost impossibleto reach the parasites, and it is necessary to continue vigorous treatmentfor months, and then, when apparently the animal seems to have gottenentirely well an

Note About Images