• The Laryngoscope · Apr 2008

    Comparative Study

    Formal psychological testing in patients with paradoxical vocal fold dysfunction.

    • Omar F Husein, Tiffany N Husein, Ricky Gardner, Tendy Chiang, Douglas G Larson, Keri Obert, Jennifer Thompson, Micheal D Trudeau, Don M Dell, and L Arick Forrest.
    • Department of Otolaryngology-Head and Neck Surgery, The Ohio State University, Columbus, Ohio, USA. tiffhusein@yahoo.com
    • Laryngoscope. 2008 Apr 1;118(4):740-7.

    ObjectiveThe etiology of paradoxical vocal fold dysfunction (PVFD) has been unclear, but it has long been hypothesized that there is a significant psychological component. The purpose of this study was to elucidate the psychological profiles of patients newly diagnosed with PVFD using psychometrically-sound psychological assessment instruments.Study DesignProspective cohort study of 45 adults newly diagnosed with PVFD at a tertiary university referral center.MethodsThe Minnesota Multiphasic Personality Inventory (MMPI-2) was administered to test for psychopathology. The Life Experiences Survey (LES) was administered to investigate levels of stress. Demographic, medical, and social histories were reviewed. MMPI-2 and LES scores for the PVFD cohort were compared with scores previously established for normative populations.ResultsThe study population included 81% female and 60% who were age 50 or older. Compared to the normative population for the MMPI-2, significant differences were noted for both male and female PVFD patients; on average, scores were highly elevated on the hypochondriasis scale and hysteria scale and less elevated on the depression scale. This pattern was consistent with conversion disorder (P < .01). In MMPI-2 subset analysis, 18 patients had a classic conversion profile while 13 others had elevated scores in the three scales of interest, but not in the classic conversion disorder pattern. Also, 11 patients had normal scores, suggesting no psychopathology. PVFD patients with a psychological history scored significantly higher on the depression and anxiety scales than PVFD patients without a psychological history. Patients with a history of asthma or gastroesophageal reflux disease (GERD) achieved significantly higher scores on the hypochondriasis scale than those without that medical history. On the LES assessment, female PVFD patients had significantly lower levels of positive stress and higher levels of negative stress than the general population; total levels of stress were not significantly different, however. Male PVFD patients had significantly lower levels of positive, negative, and total stress. For the entire cohort, asthma (65%), GERD (51%), and a history of abuse (38%) were common comorbidities.ConclusionsOn average, in both male and female adults, PVFD is associated with conversion disorder, representing a physical manifestation of underlying psychological difficulty. There also appears to be a subset of PVFD that is not associated with psychopathology. PVFD patients with a previous psychological history are prone to more depressive and anxious symptomatology. Patients with PVFD and a history of asthma or GERD are more likely to excessively complain about physical symptoms. Overall levels of stress are not higher in PVFD patients compared to a general population. However, females report more negative stress, and both males and females may have trouble coping with the amount of stress that they do have. PVFD is more common among women, more prevalent among older individuals, and can be comorbid with asthma, GERD, and previous abuse. These results have implications for treatment- psychotherapy directed for somatoform and conversion disorders may be added to traditional speech therapy for increased efficacy.

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