The loss of the voice is most commonly associated with laryngitis . The larynx is colloquially known as the voice box and is protected by cartilage, which can be felt superficially as the Adam’s apple. The larynx is composed of two leaves of mucous membrane containing muscle that is very finely innovative and controlled by different laryngeal nerves that are branches of the vagus nerve. A loss of voice may therefore not only be caused by infection and inflammation but by any damage to these nerves. Trauma, tumours and nerve disease may all result in the loss of voice. Any condition that may apply pressure to the larynx must also be considered, especially an enlarged or inflamed thyroid gland. A loss of voice may be a sign of hypo- or hyperthyroidism. Toxins such as pollution and smoking may also create inflammation leading to a loss of voice.
Isolate the cause. Recurrent or persistent sore throats that do not appear to be associated with inflammation or infection may be an early sign of an underlying disorder and. a doctor’s investigations are required.
A loss of voice caused by infection should be treated by referring to the section on sore throats .