Question: what are the causes of lost of voice?
Answer: Laryngitis —caused by a viral, bacterial, or fungal infection.
Vocal abuse—yelling or talking excessively.
Exposure to airborne irritants, such as smoke or air pollution.
Acid reflux from gastroesophageal reflux disease (GERD)
Thickening of the vocal chords.
Nodules or polyps on the vocal chords.