Complete loss of phonation due to organic disease of the larynx or to nonorganic (i.e., psychogenic) causes.

Aphonia is defined as the inability to produce voiced sound. This may result from damage, such as surgery (e.g., thyroidectomy) or a tumor., or can be a result of psychological means. Aphonia means "no sound.” In other words, a person with this disorder has lost their voice and is unable to communicate vocally..