Sound is produced by the passage of air over the vocal cords.
Respiratory disease or vocal cord paralysis results in a disturbance of this facility -dysphonia. A complete inability to produce sound is referred to as aphonia. Dysarthria often co-exists.
If, despite attempts, there is deficient sound production then examine the vocal cords by indirect laryngoscopy.
Normal abduction of vocal cords -■Ahh'
Sounds as though speaking while being strangled!
May be a functional disorder, form of 'focal' dystonia, occurs with essential tremor or hypothyroidism.
Mirror held in posterior pharynx
Causative Diseases e.g. Medullary damage:
Paralysis of both vocal cords
Patient speaks in whispers and inspiratory stridor is present.
e.g. Recurrent laryngeal nerve palsy: - following thyroid surgery
- bronchial neoplasm
- aortic aneurysm
Paralysis of left vocal cord which does not move with 'Ahh' while right abducts. When patient says '£' normal cord will move towards paralysed cord. The voice is weak and 'breathy' and the cough 'bovine'.
Mutism: An absence of any attempt at oral communication. It may be associated with bilateral frontal lobe or third ventricular pathology (see Akinetic mutism). Echolalia: Constant repetition of words or sentences heard in dementing illnesses. Palilalia: Repetition of last word or words of patient's speech. Heard in extrapyramidal disease. Logorrhoea: Prolonged speech monologues; associated with Wernicke's dysphasia.
Was this article helpful?
This guide will help millions of people understand this condition so that they can take control of their lives and make informed decisions. The ebook covers information on a vast number of different types of neuropathy. In addition, it will be a useful resource for their families, caregivers, and health care providers.