Clinical Study of Post-Laryngitis Functional Dysphonia

Key Points

• The aim is to examine the clinical characteristics and treatment effects of functional dysphonia that developed post-laryngitis.
• Conducted a clinical evaluation of 18 cases of functional dysphonia diagnosed post-laryngitis from January 2021 to December 2023.
• Employed direct training using semi-occluded vocal tract exercise (SOVTE) following medical assessment and permission for voice use.
• Evaluated treatment effects using Voice Handicap Index-10, maximum phonation time, GRBAS scale, and acoustic analysis with statistical comparisons for 9 cases.
• Statistically significant improvements were observed in Voice Handicap Index-10 and GRBAS scale elements: G, B, and A.
• Acoustic analysis showed significant reduction in Jitter scores post-treatment.
• The findings suggest prolonged voice restriction after acute laryngitis may trigger functional dysphonia, indicating the need for timely voice resumption guidance.