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Loss of trigeminal sensitivity reduces olfactory function.

Alexander Husner·Johannes Frasnelli·Antje Welge-Lüssen·Gilfe Reiss·Thomas Zahnert·Thomas Hummel
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Abstract

The trigeminal and olfactory nerves share overlapping innervation areas in the nasal cavity and seem to work in an interactive way. Loss of olfactory function leads to a decreased trigeminal sensitivity, as shown in anosmic subjects. To report the impact of disturbed trigeminal sensitivity on the olfactory function, we present a patient with unilateral loss of trigeminal function resulting from a meningeoma. Thresholds to a selective olfactory stimulus were elevated by a factor of 64 on the affected side. Recordings of event-related potentials in response to olfactory stimuli showed a significantly reduced response on the affected side. This report indicates that loss of trigeminal function may affect the sense of smell.

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FemaleHumansMeningeal NeoplasmsMeningiomaMiddle AgedSensory ThresholdsSmellTrigeminal NerveCase ReportsJournal Article

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Alexander Husner, Johannes Frasnelli, Antje Welge-Lüssen, Gilfe Reiss, Thomas Zahnert, Thomas Hummel. 2006. Loss of trigeminal sensitivity reduces olfactory function.. https://doi.org/10.1097/01.mlg.0000225946.37489.4c

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