There are a number of reports in the literature1-5 dealing with the possible relevance of psychological factors in the etiology and pathogenesis of unexplained hoarseness (dysphonia) or inability to speak above a whisper (aphonia). In general, these reports have been concerned with elucidating personality traits that are thought to be characteristic of patients with these disorders, or they have dealt chiefly with the search for various psychological and social stresses that may have precipitated the voice difficulty.
Unfortunately, there are no reports dealing with comparisons between patients who have such voice difficulties and control patients as to the prevalence and strength of various personality features. Nor are there controlled studies demonstrating that patients with these voice disorders have more or different stresses in their lives than do controls. In the absence of such controlled studies and in view of the obvious difficulties in attempting to quantify personality and life
GUZE SB, BROWN OL. Psychiatric Disease and Functional Dysphonia and Aphonia. Arch Otolaryngol. 1962;76(1):84–87. doi:10.1001/archotol.1962.00740050088016
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