Olfactory Nerve Diseases

**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)

**Tree numbers:** - C10.292.650

**Synonyms:** - Cranial Nerve I Diseases - Cranial Nerve I Disorders - First Cranial Nerve Diseases