Allergic disease

Allergic rhinitis may be associated with other allergic diseases like asthma. In France, we consider that it affects about 25% of the population. It usually begins in adolescence, especially if it is related to pollen. Otherwise it affects young adults between 18 and 30 years, and far more willing to allergies "domestic" (mites, pet hair ...). If this is a benign condition, a priori, it must not be neglected because of its impact on quality of life of its chronic nature and risk of asthma. The number of cases of rhinitis is increasing steadily over the past twenty years. Several factors have been implicated as pollution or antibiotics without definitive certainty.

Anatomically

The larynx is located in the throat behind the tongue, use a laryngeal mirror (with a crooked neck) to view. There are different structures: the epiglottis, vocal cords and the glottis.It is separated into two floors by the glottis and vocal cords.
The air we breathe passes then through the nose or mouth, pharynx, and larynx from the epiglottis, the supraglottic space, the glottis and vocal cords, the subglottic space and finally in the trachea and bronchi and lungs.