On olfaction (sense of smell)
One of the perks of COVID pandemic is the renewed interest in physical exam! It is widely reported that due to COVID, a patient may lose sense of taste and smell.
Olfaction is a test of first cranial nerve (CN I). It can be quickly tested by occluding one nostril with closed eyes and identify any common scent from the other nostril. Said that the proper evaluation of olfaction is itself a complicated science.
Said that, the proper evaluation of olfaction is itself a complicated science. There are three articles for further readings, below in the reference section.
#physical-exam
#neurology
Further readings:
1. Kronenbuerger M, Pilgramm M. Olfactory Testing. [Updated 2020 Dec 5]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2021 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK565861/
2. Cain WS, Gent J, Catalanotto FA, Goodspeed RB. Clinical evaluation of olfaction. Am J Otolaryngol. 1983 Jul-Aug;4(4):252-6. doi: 10.1016/s0196-0709(83)80068-4. PMID: 6625103.
3. Reden J, Draf C, Frank RA, Hummel T. Comparison of clinical tests of olfactory function. Eur Arch Otorhinolaryngol. 2016 Apr;273(4):927-31. doi: 10.1007/s00405-015-3682-x. Epub 2015 Jun 7. PMID: 26050222.
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