Bell's palsy diagnostic study of choice: Difference between revisions

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{{CMG}}; {{AE}} {{MMJ}}
{{CMG}}; {{AE}} {{MMJ}}
== Overview ==
== Overview ==
There is no single diagnostic study of choice for the diagnosis of Bell's palsy. Bell's palsy is a diagnosis of exclusion of other causes of [[facial nerve palsy]]. The [[Magnetic resonance imaging|Magnetic resonance imaging (MRI)]] or [[Computed tomography|computerized tomography (CT)]] may be performed to rule out other possible causes of [[Facial nerve palsy|facial nerve palsy.]]


There's no specific test for Bell's palsy. Your doctor will look at your face and ask you to move your facial muscles by closing your eyes, lifting your brow, showing your teeth and frowning, among other movements.
== Diagnostic Study of Choice ==
 
Other conditions — such as a stroke, infections, Lyme disease and tumors — can also cause facial muscle weakness, mimicking Bell's palsy. If the cause of your symptoms isn't clear, your doctor may recommend other tests, including:
* '''Electromyography (EMG).''' This test can confirm the presence of nerve damage and determine its severity. An EMG measures the electrical activity of a muscle in response to stimulation and the nature and speed of the conduction of electrical impulses along a nerve.
* '''Imaging scans.''' Magnetic resonance imaging (MRI) or computerized tomography (CT) may be needed on occasion to rule out other possible sources of pressure on the facial nerve, such as a tumor or skull fracture.
 
== Diagnostic Study of '''Electromyography (EMG) or''' Choice ==


=== Study of choice ===
=== Study of choice ===
* There is no single diagnostic study of choice for the diagnosis of Bell's palsy.<ref name="pmid23891413">{{cite journal| author=Fahimi J, Navi BB, Kamel H| title=Potential misdiagnoses of Bell's palsy in the emergency department. | journal=Ann Emerg Med | year= 2014 | volume= 63 | issue= 4 | pages= 428-34 | pmid=23891413 | doi=10.1016/j.annemergmed.2013.06.022 | pmc=3940662 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23891413  }} </ref>
* There is no single diagnostic study of choice for the diagnosis of Bell's palsy.<ref name="pmid23891413">{{cite journal| author=Fahimi J, Navi BB, Kamel H| title=Potential misdiagnoses of Bell's palsy in the emergency department. | journal=Ann Emerg Med | year= 2014 | volume= 63 | issue= 4 | pages= 428-34 | pmid=23891413 | doi=10.1016/j.annemergmed.2013.06.022 | pmc=3940662 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23891413  }} </ref>
* Bell's palsy is a diagnosis of exclusion of other causes of facial nerve palsy.<ref name="pmid24717284">{{cite journal| author=Holland NJ, Bernstein JM| title=Bell's palsy. | journal=BMJ Clin Evid | year= 2014 | volume= 2014 | issue=  | pages=  | pmid=24717284 | doi= | pmc=3980711 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=24717284  }} </ref>
* Bell's palsy is a diagnosis of exclusion of other causes of [[facial nerve palsy]].<ref name="pmid24717284">{{cite journal| author=Holland NJ, Bernstein JM| title=Bell's palsy. | journal=BMJ Clin Evid | year= 2014 | volume= 2014 | issue=  | pages=  | pmid=24717284 | doi= | pmc=3980711 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=24717284  }} </ref>
* The Magnetic resonance imaging (MRI) or computerized tomography (CT) may be performed to rule out other possible causes of facial nerve palsy.<ref name="pmid24934895">{{cite journal| author=de Almeida JR, Guyatt GH, Sud S, Dorion J, Hill MD, Kolber MR et al.| title=Management of Bell palsy: clinical practice guideline. | journal=CMAJ | year= 2014 | volume= 186 | issue= 12 | pages= 917-22 | pmid=24934895 | doi=10.1503/cmaj.131801 | pmc=4150706 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=24934895  }} </ref>
* The [[Magnetic resonance imaging|Magnetic resonance imaging (MRI)]] or [[Computed tomography|computerized tomography (CT)]] may be performed to rule out other possible causes of [[Facial nerve palsy|facial nerve palsy.]]<ref name="pmid24934895">{{cite journal| author=de Almeida JR, Guyatt GH, Sud S, Dorion J, Hill MD, Kolber MR et al.| title=Management of Bell palsy: clinical practice guideline. | journal=CMAJ | year= 2014 | volume= 186 | issue= 12 | pages= 917-22 | pmid=24934895 | doi=10.1503/cmaj.131801 | pmc=4150706 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=24934895  }} </ref>


==References==
==References==

Revision as of 18:33, 15 May 2018

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Mohamadmostafa Jahansouz M.D.[2]

Overview

There is no single diagnostic study of choice for the diagnosis of Bell's palsy. Bell's palsy is a diagnosis of exclusion of other causes of facial nerve palsy. The Magnetic resonance imaging (MRI) or computerized tomography (CT) may be performed to rule out other possible causes of facial nerve palsy.

Diagnostic Study of Choice

Study of choice

References

  1. Fahimi J, Navi BB, Kamel H (2014). "Potential misdiagnoses of Bell's palsy in the emergency department". Ann Emerg Med. 63 (4): 428–34. doi:10.1016/j.annemergmed.2013.06.022. PMC 3940662. PMID 23891413.
  2. Holland NJ, Bernstein JM (2014). "Bell's palsy". BMJ Clin Evid. 2014. PMC 3980711. PMID 24717284.
  3. de Almeida JR, Guyatt GH, Sud S, Dorion J, Hill MD, Kolber MR; et al. (2014). "Management of Bell palsy: clinical practice guideline". CMAJ. 186 (12): 917–22. doi:10.1503/cmaj.131801. PMC 4150706. PMID 24934895.

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