Dysphonia after taking dietary supplements

Published:January 13, 2023DOI:
      A 46-year-old woman was referred by her family physician to our voice clinic because of difficulty in breathing accompanied by dysphonia and cough, with no other marked changes in her general condition. Laryngeal fiberoptic study showed edema in the bilateral anterior subglottis just below the vocal folds. The edematous lesion (Figure 1, panel A: inhalation, yellow arrow) formed a glottal chink in the anterior part of the glottis (panel B: phonation, red arrow), which prevented vocal fold adduction for sufficient glottal closure during phonation, causing dysphonia in the form of breathy hoarseness. The patient's blood count, coagulation study results, and serum chemistry levels were within normal limits, and her oxygenation level was 98%. We therefore performed additional blood testing to rule out the presence of suspected allergic antigens (house dust, seasonal allergy), and antinuclear antibodies. The results of the additional blood tests were all negative. The patient was 160 cm tall, weighed 50 kg, and had a body mass index (BMI) of 19.53.
      Figure 1
      Figure 1The edematous lesion (panel A, inhalation, yellow arrow) formed a glottal chink in the anterior glottis (panel B, phonation, red arrow) which prevented vocal fold adduction allowing satisfactory glottal closure for phonation.


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