Anosmia: causes
Written and reviewed by Dr Ibrahim Imam, Consultant Neurologist. Last reviewed .
Anosmia: causes. This is presbyosmia. It occurs in about 25% of people >50 years. Fully referenced neurology checklist.
Functional anosmia
- This is presbyosmia
- It occurs in about 25% of people >50 years
Congenital anosmia: type I
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Congenital anosmia: type II
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Rhinological causes
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Parkinsonian disorders
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Other neurodegenerative diseases
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Other neurological causes
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Systemic causes
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Drug-induced
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Nutritional causes
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References
- Doty RL. Olfaction in Parkinson's disease and related disorders. Neurobiol Dis 2012; 46:527-552.
- Rolak LA. Neurology Secrets. Third edition. Hanley and Belfus Philadelphia 2001 p43.
- Hummel T, Landis BN, Hüttenbrink KB. Smell and taste disorders. GMS Curr Top Otorhinolaryngol Head Neck Surg 2011; 10:Doc04.
- Stateman WA, Henkin RI, Knöppel AB, Flegel WA. Erythrocyte membrane antigen frequencies in patients with Type II congenital smell loss. Am J Otolaryngol 2015; 36:146-152.
- Stateman WA, Knöppel AB, Flegel WA, Henkin RI. A genetic marker of the ACKR1 gene is present in patients with Type II congenital smell loss who have type I hyposmia and hypogeusia. Am J Otolaryngol 2016; 37:484-489.
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