Injuries are often the cause of aphonia . If severe, aphonia and death by strangulation can occur. Her most manifest hysterical symptom was aphonia, or loss of voice. Similar treatment on adult VF would quickly result in edema, and subsequently aphonia. Psychogenic aphonia is often seen in patients with underlying psychological problems. Aphonia is defined as the inability to produce voiced sound. In this case, the patient's history and the observed unilateral immobility rules out function aphonia. Aphonia can also be caused by and is often accompanied by fear.