Which of the following is a congenital voice disorder?

A congenital voice disorder is a condition that is present at birth and is related to the structural or functional anomalies of the larynx or vocal folds. The laryngeal web is characterized by an abnormal membrane that forms between the vocal folds, which can impede normal vibration and airflow during phonation, ultimately affecting voice quality. This webbing can lead to varying degrees of airway obstruction and voice issues from an early age, making it a clear example of a congenital disorder.

In contrast, contact ulcers and vocal fold nodules are acquired conditions, often resulting from vocal abuse or trauma to the vocal folds over time. Trauma, similarly, refers to external forces that impact the voice and vocal health, and is not congenital as it develops after birth. These distinctions are essential for understanding the nature of voice disorders and their appropriate management.