[Vocal dysfunctions: bases for rehabilitation].

Based on our observations of vocal dysfunction modes, we set up a classification of dysfunctions. Most often, we encounter a "prolonged and usual vocal forcing on an anatomically normal larynx". This forcing often essentially predominates breathing, but it may predominate the larynx, in the posterior glottis or on the vibrating area of the vocal cords. We individualized the very specific group of dysphonias with limited tone where the forcing in located, especially in the resonators. We reviewed the dysphonias with modified larynx, by secondary lesions or primitive pathologies. Analysis of the vocal dysfunction mode makes it possible to establish a therapeutic programme adapted to each case with a functional aim.