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Definition: Diseases of the first cranial (olfactory) nerve, which usually feature anosmia or other alterations in the sense of smell and taste. Anosmia may be associated with neoplasms; central nervous system infections; craniocerebral trauma; inherited conditions; toxins; metabolic diseases; tobacco abuse; and other conditions. (Adams et al., Principles of Neurology, 6th ed, pp229-31) |
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