anosmia
Complete loss of the sense of smell, often indicating neurological dysfunction.
Full Definition
Anosmia is the complete loss of olfactory function, which in neuropsychological contexts often serves as an early indicator of neurodegenerative diseases, particularly Parkinson's disease and Alzheimer's dementia. Unlike temporary smell loss from upper respiratory infections, neurological anosmia typically persists and may precede other cognitive symptoms by years. Assessment of olfactory function has become increasingly important in early detection protocols for neurodegenerative conditions.
Usage
Usage note: Document onset timing relative to other symptoms; distinguish from temporary infectious causes.
In Context
- "The patient reported complete anosmia beginning approximately two years prior to the onset of motor symptoms, consistent with early Parkinson's disease." — Clinical history documentation
- "Anosmia was confirmed through formal olfactory testing, raising concerns about possible underlying neurodegenerative processes." — Neurological evaluation