A disorder characterized by involvement of the olfactory nerve (first cranial nerve).
A non-neoplastic or neoplastic disorder affecting the olfactory nerve (first cranial nerve).
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)