Final answer:
Dysphonia is a speech impairment characterized by difficulty in producing voice sounds. It does not result from a brain lesion and may precede aphonia, the complete loss of voice.
Step-by-step explanation:
Dysphonia is a speech impairment characterized by difficulty in producing voice sounds. It is often caused by problems with the vocal cords, such as muscle weakness or paralysis. This condition can make it challenging for individuals to speak clearly and may result in hoarseness or a strained voice.
Dysphonia does not result from a brain lesion, unlike some other speech disorders. It is important to note that dysphonia is different from aphonia, which is the complete loss of voice, and it can sometimes precede aphonia. While dysphonia affects speech, it does not necessarily impact a person's ability to communicate through writing or signs.
Learn more about Dysphonia and its characteristics