Voice Disorders Prerequisites of normal voice production: 1. Normal range of movement of vocal folds. 2. Normal mobility of mucosa on deep layers.

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Presentation transcript:

Voice Disorders

Prerequisites of normal voice production: 1. Normal range of movement of vocal folds. 2. Normal mobility of mucosa on deep layers. 3. Optimal coaptation of vocal folds edges. 4. Optimal motor force. 5. Optimal pulmonary support. 6. Optimal timing between vocal fold closure and pulmonary exhalation. 7. Optimal tuning of vocal fold musculature (int. & ext.).

Definition of dysphonia: - Difficulty in phonation. - Change of voice from his /her habitual. - Hoarseness = roughness & harshness of voice.

Etiological classification of dysphonia: I. Organic Causes II. Non-Organic Causes Habitual Psychogenic IV. Accompaniment of Neuro-psychiatric Ailments III. Minimal Associated Pathological Lesions (MAPLs)

III.Voice disorders: A) Organic voice disorders:. Congenital.. Inflammatory.. Traumatic.. Neurological.. Neoplastic.. Hormonal.. Status post-laryngectomy.

Sulcus vocalis

Respiration Phonation Laryngeal carcinoma

RespirationPhonation Left vocal fold paralysis * *

1. Hyperfunctional childhood dysphonia. 2. Incomplete mutation. 3. Phonasthenia (Voice fatigue). 4. Hyperfunctional dysphonia. 5. Hypofunctional dysphonia. 6. Ventricular dysphonia. III.Voice disorders: B) Non-organic voice disorders: i. Habitual: