voice fatigue
Inability to sustain voice use, often indicating superior laryngeal nerve injury. Particularly problematic for professional voice users.
Full Definition
Voice fatigue is a symptom characterized by the inability to sustain vocal effort or maintain consistent voice quality over time, often manifesting as vocal weakness, breathiness, or pitch instability with continued use. In the context of thyroid surgery, voice fatigue typically indicates injury to the external branch of the superior laryngeal nerve, which innervates the cricothyroid muscle responsible for vocal cord tensioning and fine pitch control. Unlike recurrent laryngeal nerve injury which causes obvious vocal cord paralysis, superior laryngeal nerve injury produces subtle but functionally significant voice changes that are particularly devastating for singers and professional speakers.
Usage
Usage note: Distinguish from hoarseness and document impact on patient's vocal demands.
In Context
- "The opera singer experienced significant voice fatigue following thyroid surgery, suggesting superior laryngeal nerve injury." — ENT consultation
- "Voice fatigue was noted during prolonged speaking tasks at the 2-week follow-up." — Post-operative assessment