PURPOSE: To verify the occurrence of signs and symptoms of autonomic nervous system dysfunction in individuals with behavioral dysphonia, and to compare it with the results obtained by individuals without vocal complaints. METHODS: Participants were 128 adult individuals with ages between 14 and 74 years, divided into two groups: behavioral dysphonia (61 subjects) and without vocal complaints (67 subjects). It was administered the Protocol of Autonomic Dysfunction, containing 46 questions: 22 related to the autonomic nervous system and had no direct relationship with voice, 16 related to both autonomic nervous system and voice, six non-relevant questions, and two reliability questions. RESULTS: There was a higher occurrence of reported neurovegetative signs in the group with behavioral dysphonia, in questions related to voice, such as frequent throat clearing, frequent swallowing need, fatigability when speaking, and sore throat. In questions not directly related to voice, dysphonic individuals presented greater occurrence of three out of 22 symptoms: gas, tinnitus and aerophagia. Both groups presented similar results in questions non-relevant to the autonomic nervous system. Reliability questions needed reformulation. CONCLUSION: Individuals with behavioral dysphonia present higher occurrence of neurovegetative signs and symptoms, particularly those with direct relationship with voice, indicating greater lability of the autonomic nervous system in these subjects.
Dysphonia; Autonomic nervous system; Central nervous system; Anxiety; Stress, physiological
