Anosmia - absence of smell. Reduction of smell is called hyposmia. Hyposmia often occurs as a result of sharply anatomical changes in the nose (nasal septum, polyps, tumors of the nose, and others). Anosmia observed with the defeat of the receptor and pathways of the olfactory analyzer (Ozen, chronic purulent sinusitis, neuritis of the branches of the olfactory nerve infectious origin, poisoning by nicotine, morphine, atropine, abscess and brain tumors, encephalitis, fractures base of the skull , and so on).
Forecast by hyposmia, and if anosmia associated with anatomical changes in the nasal cavity, favorable; if anosmia associated with the illness of the olfactory analyzer is often negative.
Treatment: addressing the causes of anosmia, or hyposmia.

Anosmia (anosmia; from the Greek. negative consoles'an and osme-smell - the absence of smell. Most often there is a respiratory anosmia arising from changes in the nasal cavity, preventing the penetration of odorous substances in the olfactory region: swelling of the mucous membrane of the nose at a cold, polyps and tumors of the nose, the nasal septum, atresia of the nasal passages or Joan. Hyposmia (hyposmia; GK. hypo - below) - reduction of olfactory sensations. To hyposmia and anomie lead and trophic changes of the mucous membrane of the nose when Ozen.
Several less common neurogenic anosmia, growing due to disorders of the peripheral or Central Department of the olfactory analyzer. Anosmia Central origin happens when basal tumors of the frontal lobe of the brain. A. often occurs when the injury frontal area with damage to the lamina cribrosa and tear olfactory threads. Intoxication of various chemical substances or in connection with infectious diseases can cause inflammatory changes in olfactory nerve and loss of smell. Very rarely observed congenital A. associated with the underdevelopment of the olfactory nerves. Senile A. usually caused by atrophy of the olfactory cells.
When A. decline sharply taste sensations, because the smell is of great importance in the sense of taste. Treatment A. should be aimed at elimination of the reasons that caused it. When the olfactory nerve neuritis shows the treatment is usually used In the neuritis (see).