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Their study is essential for the understanding of different central conditions associated with a complete or partial injury of the nerve.

Comparable to a mixed nerve components complete with motor, sensory and autonomic, sensory fibers to the sensitivity of the ear canal and the shell of the pavilion, the sensory fibers, by the intermediary of the chord tympani taste for areas of thirds of the tongue.

Secretory fibers to the lachrymal gland by the intermediary of the great superficial petrosal nerve and the sub mandibular by a parallel path of the sensory fibers.

The facial nerve passes through two key regions, the rock and the parodied gland.

A level winding its way rock takes a form of z within the petrous pyramid and allows subdivided into several segments: labyrinthine segment or first portion, the tympani segment and second segment and the mastoid portion or third portion.

Peripheral facial paralysis and a positive diagnosis is usually easy, the topography of the lesion and the functional evaluation is important and allows us to make an appropriate remedy.

CLINICAL

The examination is of paramount importance, the terms of onset of paralysis are generally easy to specify, three forms of presentation are more common: facial paralysis that appears in the course of evolution of etiologic infection, chronic otitis known, the most common chronic otitis infected cholesteatoma. Facial paralysis occurs spontaneously without evident cause, sudden installation, it is necessary to investigate a recent throat infection, flu or viral context, a rash or herpes sistering guide us to a viral etiology. On the negative, the nature of the injury PF oriented towards “a frig ore” Bell’s Palsy of ischemic origin.

In post-traumatic facial paralysis as a result of trauma of the cliff, it is necessary to clarify the existence of an eventual coma, extent and duration, the installation of facial paralysis in relation to trauma secondary to the paralysis in front of these lesions.