Further analysis of the voice sign in chorea / Walter B. Swift.

  • Swift, Walter Babcock, 1868-
Date:
1914
Catalogue details

Licence: In copyright

Credit: Further analysis of the voice sign in chorea / Walter B. Swift. 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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    2. There is sufficient uniformity and frequency in the appearance of vocal changes to warrant us in classifying changes of pitch and intensity as one of the signs of chorea; of equal dignity with the choreic knee-jerk of Shaw,^ the respiratory signs of Graves® and other minor symptoms. 3. Other less frequent and less marked changes occur that seem of interest subordinate to those in the vowels. 4. The most marked change occurred in the open prolonged sound of “a” as in “are,” and I therefore offer this as the routine clinical test and method for the elicitation of the choreic voice sign. SUMMARY Analysis of twenty cases of chorea with over five hundred observa- tions on the voice show a change of pitch and intensity in two cases out of three — a change that deserves recognition as a new sign in chorea — the choreic voice sign. 110 Bay State Road.