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Is it Bell's palsy or a stroke? Emergency physicians have the answer

Date:
July 26, 2013
Source:
American College of Emergency Physicians
Summary:
Emergency physicians correctly identified nearly 100 percent of patients with Bell's palsy, the symptoms of which are nearly identical to potentially life-threatening diseases such as stroke and brain tumors.

Emergency physicians correctly identified nearly 100 percent of patients with Bell's palsy, the symptoms of which are nearly identical to potentially life-threatening diseases such as stroke and brain tumors. The results of a study of 6 years of California patient records were published online yesterday in Annals of Emergency Medicine.

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"Even lacking established guidelines for diagnosing Bell's palsy, which is the most common cause of paralysis of one side of the face, emergency physicians make the right call nearly every time," said lead study author Jahan Fahimi, MD, MPH, of Alameda County Medical Center in Oakland, Calif. and the University of California, San Francisco. "The dramatic and distressing nature of facial paralysis often brings patients to the ER for evaluation, often with a concern that they are having a stroke. The combination of thorough history-taking and detailed physical exam allows emergency physicians to determine which patients have a dangerous condition and which can safely be discharged home. While there may be a role for imaging, such as CT or MRI, the overwhelming majority of patients can be evaluated without advanced diagnostic tests."

Researchers analyzed 43,979 records for patients discharged from California emergency departments with a diagnosis of Bell's palsy. At 90-day follow up, 0.8 percent of those patients received an alternate diagnosis, such as stroke, brain bleed, brain tumor, central nervous system infection, Guillain-Barre syndrome, Lyme disease, ear infection or herpes zoster. When restricted to only life-threatening alternative diagnoses associated with central facial paralysis, only 0.3 percent were misdiagnosed.

Patients with Bell's palsy commonly manifest partial or complete weakness of the muscles of half of the face, resulting in an inability to raise one eyebrow, wrinkle their foreheads or close one eyelid. Symptoms often progress fairly rapidly and strongly mimic the symptoms of certain types of stroke. It affects approximately 15 people out of 100,000 every year.


Story Source:

The above story is based on materials provided by American College of Emergency Physicians. Note: Materials may be edited for content and length.


Journal Reference:

  1. Jahan Fahimi, Babak B. Navi, Hooman Kamel. Potential Misdiagnoses of Bell's Palsy in the Emergency Department. Annals of Emergency Medicine, 2013; DOI: 10.1016/j.annemergmed.2013.06.022

Cite This Page:

American College of Emergency Physicians. "Is it Bell's palsy or a stroke? Emergency physicians have the answer." ScienceDaily. ScienceDaily, 26 July 2013. <www.sciencedaily.com/releases/2013/07/130726074104.htm>.
American College of Emergency Physicians. (2013, July 26). Is it Bell's palsy or a stroke? Emergency physicians have the answer. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2013/07/130726074104.htm
American College of Emergency Physicians. "Is it Bell's palsy or a stroke? Emergency physicians have the answer." ScienceDaily. www.sciencedaily.com/releases/2013/07/130726074104.htm (accessed December 20, 2014).

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