Which type of voice disorder is characterized by physical changes in the vocal cords?

The correct choice is based on the understanding that structural voice disorders are directly associated with physical changes or abnormalities in the vocal cords or surrounding structures. These changes can include lesions, nodules, polyps, or any other alterations that affect the vocal cord's anatomy or function, leading to changes in voice quality, pitch, and loudness.

Structural issues can arise from a variety of causes, including vocal misuse or overuse, injuries, or medical conditions, which can ultimately change how the vocal cords vibrate and produce sound. This distinction is crucial in diagnosing and treating voice disorders, as addressing the underlying structural issues often requires specific medical or surgical interventions, whereas other types of voice disorders might be managed through behavioral or therapeutic approaches. Understanding the nature of the changes in the vocal cords helps clinicians develop appropriate treatment plans tailored to the individual's needs.