The diseases of the ear, their diagnosis and treatment : a text-book of aural surgery in the form of academical lectures / by Anton von Tröltsch ; translated from the German and edited by D.B. St. John Roosa ... from the second and last German edition.

  • Tröltsch, Anton Friedrich, Freiherr von, 1829-1890.
Date:
1864
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Licence: Public Domain Mark

Credit: The diseases of the ear, their diagnosis and treatment : a text-book of aural surgery in the form of academical lectures / by Anton von Tröltsch ; translated from the German and edited by D.B. St. John Roosa ... from the second and last German edition. 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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    LECTURE XXV. Noises in the Ear or, Tinnitus Aurium. — Examination of Patients.— Conclusion. Gentlemen—-We must, to-day, devote a little time to the irri- tated condition of the auditory nerve, manifesting itself by noises in the ear—Tinnitus aurium. The causes for this sensi- tive condition of the nerve, which does not depend on its irri- tation from external impression, may lie in the nervous parts of the ear, and exist in any of its morbid conditions ; for we have seen that tinnitus aurium has been a symptom in the most of the diseases of the ear, which we have studied together. Every irritation, from any direction, working upon the acoustic nerve, will declare itself by its own peculiar symptoms. We find these subjective tones, or noises, in all irritated, abnormal conditions of the brain, whether arising from the organ itself, or arising as a reflected sensation or irritation from any source whatever. We need not speak of the peculiar affec- tions of the cerebrum, such as intoxication, anomalies of the materials of the blood, transient and permanent interferences with free circulation, with also that class of indefinable morbid symptoms, to which the vague names, relaxation of the nerves, excessive nervous irritation, nervousness, and the like, are attached. Generally, these noises in the ear depend on abnormal con- ditions in that organ itself. We find tinnitus always present in acute inflammation of the membrana tympani, and of the cavity of the . tympanum ; and furthermore, it is present in coincidence with, or, as a result of all causes, which increase the pressure on the fluid of the labyrinth ; if, for instance, the membrana tympani is pressed inwards by inspissated cerumen resting on its surface ; or, if the Eustachian tube is obstructed so that the membrana tympani and the ossicula auditus lie