The nose is not an appendage of the decorative face, also because in many

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The decrease or absence of smell is called hyposmia or anosmia . The causes that produce this symptom are many, for simplicity, we reduce them to two groups. The first is that of causes obstructive , in which odors are unable to reach the olfactory area, located at the top of the nose. The second group is that where there is a loss of olfactory cells or neural structures behind them (nerve olfactory or olfactory area of \u200b\u200bthe brain), which is what causes the neurosensory . These include the possibility of damage to the olfactory epithelium is relatively frequent. The olfactory nerve cells, however, are very special because unlike the others have the ability to reproduce. This translates into the possibility that a sensorineural loss can, theoretically, take shelter. E ' common experience for many patients, in fact, the recovery of olfactory function after a certain period of anosmia.
From: http://www.rinolaringoiatria.com/disturbiolfatto.htm
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