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Local injections of suspended steroid solution into the nasal mucosa were performed for 102 patients with olfactory disturbances. Dexamethasone acetate suspension in a concentration of 4 mg/0.5 ml was injected into the mucosa of the nasal septum on each side every 2 weeks for a total of 8 times. Mecobalamin and ATP were also administrated in a daily dose of 750 micrograms and 300 mg, respectively. Of the 102 olfactory disturbance patients, 32 patients had chronic sinusitis, 24 patients had common cold, 14 patients had allergic rhinitis, 9 patients had head trauma and the remaining 23 patients the reason for the disturbance was unknown. Using a visual analogue scale, improvements were found in 63.7%. We assessed the effect of this therapy on the threshold of olfactory sensation and perception using a T &amp; T olfactogram. The overall mean values of olfactory sensation and perception were significantly improved; from 4.75 +/- 1.44 (SD) to 3.01 +/- 2.13 (SD) and from 5.30 +/- 0.88 (SD) to 4.19 +/- 1.60 (SD), respectively. All but the cases of head trauma showed significant improvement. Overall, 44 (43.1%) of the 102 patients were defined as having had a positive olfactory response to this treatment (an improvement in the average perception olfactory score of &gt; = 1.0). In cases of chronic sinusitis, 15 (46.9%) of the 32 patients were positive. 12 (50.0%) of the common cold 24 patients, 7 (50.0%) of the 14 allergic rhinitis patients, 2 (22.2%) of the 9 head trauma patients and 11 (47.8%) of the 23 unknown etiology patients were positive for this treatment. Patients with severe olfactory dysfunction and anosmia showed a lower response than the patients who were mildly to moderately affected. Patients showing no response in the Alinamin intravenous test showed also lower improvement rates than those showing a normal response. Interestingly, 8 (27.6%) of 29 patients with a normal appearance of the olfactory clefts and no response for the Alinamin test responded positively to this treatment. This meant that the olfactory disturbance might be due to the existence of edema surrounding the olfactory nerve, not of the olfactory cleft. The improvement rate of patients treated within one year from the onset of these olfactory disturbance was better than the rate of those over one year. The present new therapeutic modality is very useful as a treatment which showed only be performed by otolaryngologists.

Local Injection of Dexamethasone Acetate Suspension into the Nasal Mucosa in Cases of Olfactory Disturbance.